In a fast-evolving industry, Prime Steel Industries remains adaptive, ensuring that its products and services align with the dynamic demands of the market.

Contact Info

+91 9326 427 729 +91 22-6639-4806 +91 22-6752-1181
sales@primesteelcorp.com

Corporate Off: No.6, Ground Floor, 32, Parekh House,

7th Khetwadi, Mumbai – 400004, Maharashtra, India.

ANSI/ASME B16.5 Flange Catalogue Download

ANSI / ASME B16.5 Class 150 Weld Neck Flange Dimensions

Class 150 Weld Neck Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 1.38 1.88 0.84 1.19 0.62 2 2.38 4 0.63
3/4 3.88 0.50 1.69 2.06 1.05 1.50 0.82 2 2.75 4 0.63
1 4.25 0.56 2.00 2.19 1.32 1.94 1.05 3 3.13 4 0.63
1 1/4 4.63 0.63 2.50 2.25 1.66 2.31 1.38 3 3.50 4 0.63
1 1/2 5.00 0.69 2.88 2.44 1.90 2.56 1.61 4 3.88 4 0.63
2 6.00 0.75 3.63 2.50 2.38 3.06 2.07 6 4.75 4 0.75
2 1/2 7.00 0.88 4.13 2.75 2.88 3.56 2.47 8 5.50 4 0.75
3 7.50 0.94 5.00 2.75 3.50 4.25 3.07 10 6.00 4 0.75
3 1/2 8.50 0.94 5.50 2.81 4.00 4.81 3.55 12 7.00 8 0.75
4 9.00 0.94 6.19 3.00 4.50 5.31 4.03 15 7.50 8 0.75
5 10.00 0.94 7.31 3.50 5.56 6.44 5.05 19 8.50 8 0.88
6 11.00 1.00 8.50 3.50 6.63 7.56 6.07 24 9.50 8 0.88
8 13.50 1.13 10.63 4.00 8.63 9.69 7.98 39 11.75 8 0.88
10 16.00 1.19 12.75 4.00 10.75 12.00 10.02 52 14.25 12 1.00
12 19.00 1.25 15.00 4.50 12.75 14.38 12.00 80 17.00 12 1.00
14 21.00 1.38 16.25 5.00 14.00 15.75 13.25 110 18.75 12 1.13
16 23.50 1.44 18.50 5.00 16.00 18.00 15.25 140 21.25 16 1.13
18 25.00 1.56 21.00 5.50 18.00 19.88 17.25 150 22.75 16 1.25
20 27.50 1.69 23.00 5.69 20.00 22.00 19.25 180 25.00 20 1.25
22 29.50 1.81 25.25 5.88 22.00 24.25 21.25 225 27.25 20 1.38
24 32.00 1.88 27.25 6.00 24.00 26.13 23.25 260 29.50 20 1.38

ANSI / ASME B16.5 Class 150 Slip On Flange Dimensions

Class 150 Slip On Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 1.38 0.63 1.19 0.88 1 2.38 4 0.63
3/4 3.88 0.50 1.69 0.63 1.50 1.09 2 2.75 4 0.63
1 4.25 0.56 2.00 0.69 1.94 1.36 2 3.13 4 0.63
1 1/4 4.63 0.63 2.50 0.81 2.31 1.70 3 3.50 4 0.63
1 1/2 5.00 0.69 2.88 0.88 2.56 1.95 3 3.88 4 0.63
2 6.00 0.75 3.63 1.00 3.06 2.44 5 4.75 4 0.75
2 1/2 7.00 0.88 4.13 1.13 3.56 2.94 7 5.50 4 0.75
3 7.50 0.94 5.00 1.19 4.25 3.57 8 6.00 4 0.75
3 1/2 8.50 0.94 5.50 1.25 4.81 4.07 11 7.00 8 0.75
4 9.00 0.94 6.19 1.31 5.31 4.57 13 7.50 8 0.75
5 10.00 0.94 7.31 1.44 6.44 5.66 15 8.50 8 0.88
6 11.00 1.00 8.50 1.56 7.56 6.72 19 9.50 8 0.88
8 13.50 1.13 10.63 1.75 9.69 8.72 30 11.75 8 0.88
10 16.00 1.19 12.75 1.94 12.00 10.88 43 14.25 12 1.00
12 19.00 1.25 15.00 2.19 14.38 12.088 64 17.00 12 1.00
14 21.00 1.38 16.25 2.25 15.75 14.14 90 18.75 12 1.13
16 23.50 1.44 18.50 2.50 18.00 16.16 98 21.25 16 1.13
18 25.00 1.56 21.00 2.69 19.88 18.18 130 22.75 16 1.25
20 27.50 1.69 23.00 2.88 22.00 20.20 165 25.00 20 1.25
22 29.50 1.81 25.25 3.13 24.25 22.22 185 27.25 20 1.38
24 32.00 1.88 27.25 3.25 26.13 24.25 220 29.50 20 1.38

ANSI / ASME B16.5 Class 150 Blind Flange Dimensions

Class 150 Blind Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 1.38 1 2.38 4 0.63
3/4 3.88 0.50 1.69 2 2.75 4 0.63
1 4.25 0.56 2.00 2 3.13 4 0.63
1 1/4 4.63 0.63 2.50 3 3.50 4 0.63
1 1/2 5.00 0.69 2.88 4 3.88 4 0.63
2 6.00 0.75 3.63 5 4.75 4 0.75
2 1/2 7.00 0.88 4.13 7 5.50 4 0.75
3 7.50 0.94 5.00 9 6.00 4 0.75
3 1/2 8.50 0.94 5.50 13 7.00 8 0.75
4 9.00 0.94 6.19 17 7.50 8 0.75
5 10.00 0.94 7.31 20 8.50 8 0.88
6 11.00 1.00 8.50 26 9.50 8 0.88
8 13.50 1.13 10.63 45 11.75 8 0.88
10 16.00 1.19 12.75 70 14.25 12 1.00
12 19.00 1.25 15.00 110 17.00 12 1.00
14 21.00 1.38 16.25 140 18.75 12 1.13
16 23.50 1.44 18.50 180 21.25 16 1.13
18 25.00 1.56 21.00 220 22.75 16 1.25
20 27.50 1.69 23.00 285 25.00 20 1.25
22 29.50 1.81 25.25 355 27.25 20 1.38
24 32.00 1.88 27.25 430 29.50 20 1.38

ANSI / ASME B16.5 Class 150 Socket-Weld Flange Dimensions

Class 150 Socket-Weld Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket(D) Approximate Weight (lbs) Bolt Circle (C)
1/2 3.50 0.44 1.38 0.63 1.19 0.62 0.88 0.38 1 2.38
3/4 3.88 0.50 1.69 0.63 1.50 0.82 1.09 0.44 2 2.75
1 4.25 0.56 2.00 0.69 1.94 1.05 1.36 0.50 2 3.13
1 1/4 4.63 0.63 2.50 0.81 2.31 1.38 1.70 0.56 3 3.50
1 1/2 5.00 0.69 2.88 0.88 2.56 1.61 1.95 0.63 3 3.88
2 6.00 0.75 3.63 1.00 3.06 2.07 2.44 0.69 5 4.75
2 1/2 7.00 0.88 4.13 1.13 3.56 2.47 2.94 0.75 7 5.50
3 7.50 0.94 5.00 1.19 4.25 3.07 3.57 0.81 8 6.00
3 1/2 8.50 0.94 5.50 1.25 4.81 3.55 4.07 0.88 11 7.00
4 9.00 0.94 6.19 1.31 5.31 4.03 4.57 0.94 13 7.50
5 10.00 0.94 7.31 1.44 6.44 5.05 5.66 0.94 15 8.50
6 11.00 1.00 8.50 1.56 7.56 6.07 6.72 1.06 19 9.50
8 13.50 1.13 10.63 1.75 9.69 7.98 8.72 1.25 30 11.75
10 16.00 1.19 12.75 1.94 12.00 10.02 10.88 1.31 43 14.25
12 19.00 1.25 15.00 2.19 14.38 12.00 12.088 1.56 64 17.00
14 21.00 1.38 16.25 2.25 15.75 13.25 14.14 1.63 90 18.75
16 23.50 1.44 18.50 2.50 18.00 15.25 16.16 1.75 98 21.25
18 25.00 1.56 21.00 2.69 19.88 17.25 18.18 1.94 130 22.75
20 27.50 1.69 23.00 2.88 22.00 19.25 20.20 2.13 165 25.00
22 29.50 1.81 25.25 3.13 24.25 21.25 22.22 2.38 185 27.25
24 32.00 1.88 27.25 3.25 26.13 23.25 24.25 2.50 220 29.50

ANSI / ASME B16.5 Class 150 Threaded Flange Dimensions

Class 150 Threaded Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 1.38 0.63 1.19 1 2.38 4 0.63
3/4 3.88 0.50 1.69 0.63 1.50 2 2.75 4 0.63
1 4.25 0.56 2.00 0.69 1.94 2 3.13 4 0.63
1 1/4 4.63 0.63 2.50 0.81 2.31 3 3.50 4 0.63
1 1/2 5.00 0.69 2.88 0.88 2.56 3 3.88 4 0.63
2 6.00 0.75 3.63 1.00 3.06 5 4.75 4 0.75
2 1/2 7.00 0.88 4.13 1.13 3.56 7 5.50 4 0.75
3 7.50 0.94 5.00 1.19 4.25 8 6.00 4 0.75
3 1/2 8.50 0.94 5.50 1.25 4.81 11 7.00 8 0.75
4 9.00 0.94 6.19 1.31 5.31 13 7.50 8 0.75
5 10.00 0.94 7.31 1.44 6.44 15 8.50 8 0.88
6 11.00 1.00 8.50 1.56 7.56 19 9.50 8 0.88
8 13.50 1.13 10.63 1.75 9.69 30 11.75 8 0.88
10 16.00 1.19 12.75 1.94 12.00 43 14.25 12 1.00
12 19.00 1.25 15.00 2.19 14.38 64 17.00 12 1.00
14 21.00 1.38 16.25 2.25 15.75 90 18.75 12 1.13
16 23.50 1.44 18.50 2.50 18.00 98 21.25 16 1.13
18 25.00 1.56 21.00 2.69 19.88 130 22.75 16 1.25
20 27.50 1.69 23.00 2.88 22.00 165 25.00 20 1.25
22 29.50 1.81 25.25 3.13 24.25 185 27.25 20 1.38
24 32.00 1.88 27.25 3.25 26.13 220 29.50 20 1.38

ANSI / ASME B16.5 Class 150 Lap Joint Flange Dimensions

Class 150 Lap Joint Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (B) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.50 0.44 0.63 1.19 0.13 0.90 1 2.38 4 0.63
3/4 3.88 0.50 0.63 1.50 0.13 1.11 2 2.75 4 0.63
1 4.25 0.56 0.69 1.94 0.13 1.38 2 3.13 4 0.63
1 1/4 4.63 0.63 0.81 2.31 0.19 1.72 3 3.50 4 0.63
1 1/2 5.00 0.69 0.88 2.56 0.25 1.97 3 3.88 4 0.63
2 6.00 0.75 1.00 3.06 0.31 2.46 5 4.75 4 0.75
2 1/2 7.00 0.88 1.13 3.56 0.31 2.97 7 5.50 4 0.75
3 7.50 0.94 1.19 4.25 0.38 3.60 8 6.00 4 0.75
3 1/2 8.50 0.94 1.25 4.81 0.38 4.10 11 7.00 8 0.75
4 9.00 0.94 1.31 5.31 0.44 4.60 13 7.50 8 0.75
5 10.00 0.94 1.44 6.44 0.44 5.69 15 8.50 8 0.88
6 11.00 1.00 1.56 7.56 0.50 6.75 19 9.50 8 0.88
8 13.50 1.13 1.75 9.69 0.50 8.75 30 11.75 8 0.88
10 16.00 1.19 1.94 12.00 0.50 10.92 43 14.25 12 1.00
12 19.00 1.25 2.19 14.38 0.50 12.92 64 17.00 12 1.00
14 21.00 1.38 3.13 15.75 0.50 14.18 105 18.75 12 1.13
16 23.50 1.44 3.44 18.00 0.50 16.19 140 21.25 16 1.13
18 25.00 1.56 2.88 19.88 0.50 18.2 160 22.75 16 1.25
20 27.50 1.69 4.06 22.00 0.50 20.25 195 25.00 20 1.25
22 29.50 1.81 4.25 24.25 0.50 22.25 245 27.25 20 1.38
24 32.00 1.88 4.38 26.13 0.50 24.25 275 29.50 20 1.38

ANSI / ASME B16.5 Class 300 Weld Neck Flange Dimensions

Class 300 Weld Neck Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2.06 0.84 1.50 0.62 2 2.63 4 0.63
3/4 4.63 0.63 1.69 2.25 1.05 1.88 0.82 3 3.25 4 0.75
1 4.88 0.69 2.00 2.44 1.32 2.13 1.05 4 3.50 4 0.75
1 1/4 5.25 0.75 2.50 2.56 1.66 2.50 1.38 5 3.88 4 0.75
1 1/2 6.13 0.81 2.88 2.69 1.90 2.75 1.61 7 4.50 4 0.88
2 6.50 0.88 3.63 2.75 2.38 3.31 2.07 9 5.00 8 0.75
2 1/2 7.50 1.00 4.13 3.00 2.88 3.94 2.47 12 5.88 8 0.88
3 8.25 1.13 5.00 3.13 3.50 4.63 3.07 15 6.63 8 0.88
3 1/2 9.00 1.19 5.50 3.19 4.00 5.25 3.55 18 7.25 8 0.88
4 10.00 1.25 6.19 3.38 4.50 5.75 4.03 25 7.88 8 0.88
5 11.00 1.38 7.31 3.88 5.56 7.00 5.05 32 9.25 8 0.88
6 12.50 1.44 8.50 3.88 6.63 8.13 6.07 42 10.63 12 0.88
8 15.00 1.63 10.63 4.38 8.63 10.25 7098 67 13.00 12 1.00
10 17.50 1.88 12.75 4.63 10.75 12.63 10.02 91 15.25 16 1.13
12 20.50 2.00 15.00 5.13 12.75 14.75 12.00 140 17.75 16 1.25
14 23.00 2.13 16.25 5.63 14.00 16.75 13.25 180 20.25 20 1.25
16 25.50 2.25 18.50 5.75 16.00 19.00 15.25 250 22.50 20 1.38
18 28.00 2.38 21.00 6.25 18.00 21.00 17.25 320 24.75 24 1.38
20 30.50 2.50 23.00 6.38 20.00 23.13 19.25 400 27.00 24 1.38
22 33.00 2.63 25.25 6.50 22.00 25.25 21.25 465 29.25 24 1.63
24 36.00 2.75 27.25 6.63 24.00 27.63 23.25 580 32.00 24 1.63

ANSI / ASME B16.5 Class 300 Slip On Flange Dimensions

Class 300 Slip On Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 0.88 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 1.09 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 1.36 3 3.50 4 0.75
1 1/4 5.25 0.75 2.50 1.06 2.50 1.70 4 3.88 4 0.75
1 1/2 6.13 0.81 2.88 1.19 2.75 1.95 6 4.50 4 0.88
2 6.50 0.88 3.63 1.31 3.31 2.44 7 5.00 8 0.75
2 1/2 7.50 1.00 4.13 1.50 3.94 2.94 10 5.88 8 0.88
3 8.25 1.13 5.00 1.69 4.63 3.57 13 6.63 8 0.88
3 1/2 9.00 1.19 5.50 1.75 5.25 4.07 17 7.25 8 0.88
4 10.00 1.25 6.19 1.88 5.75 4.57 22 7.88 8 0.88
5 11.00 1.38 7.31 2.00 7.00 5.66 28 9.25 8 0.88
6 12.50 1.44 8.50 2.06 8.13 6.72 39 10.63 12 0.88
8 15.00 1.63 10.63 2.44 10.25 8.72 58 13.00 12 1.00
10 17.50 1.88 12.75 2.62 12.63 10.88 81 15.25 16 1.13
12 20.50 2.00 15.00 2.88 14.75 12.88 115 17.75 16 1.25
14 23.00 2.13 16.25 3.00 16.75 14.14 165 20.25 20 1.25
16 25.50 2.25 18.50 3.25 19.00 16.16 190 22.50 20 1.38
18 28.00 2.38 21.00 3.50 21.00 18.18 250 24.75 24 1.38
20 30.50 2.50 23.00 3.75 23.13 20.20 315 27.00 24 1.38
22 33.00 2.63 25.25 4.00 25.25 22.22 370 29.25 24 1.63
24 36.00 2.75 27.25 4.19 27.63 24.25 475 32.00 24 1.63

ANSI / ASME B16.5 Class 300 Blind Flange Dimensions

Class 300 Blind Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 3 3.25 4 0.75
1 4.88 0.69 2.00 3 3.50 4 0.75
1 1/4 5.25 0.75 2.50 4 3.88 4 0.75
1 1/2 6.13 0.81 2.88 6 4.50 4 0.88
2 6.50 0.88 3.63 8 5.00 8 0.75
2 1/2 7.50 1.00 4.13 12 5.88 8 0.88
3 8.25 1.13 5.00 16 6.63 8 0.88
3 1/2 9.00 1.19 5.50 21 7.25 8 0.88
4 10.00 1.25 6.19 27 7.88 8 0.88
5 11.00 1.38 7.31 35 9.25 8 0.88
6 12.50 1.44 8.50 50 10.63 12 0.88
8 15.00 1.63 10.63 81 13.00 12 1.00
10 17.50 1.88 12.75 124 15.25 16 1.13
12 20.50 2.00 15.00 185 17.75 16 1.25
14 23.00 2.13 16.25 250 20.25 20 1.25
16 25.50 2.25 18.50 295 22.50 20 1.38
18 28.00 2.38 21.00 395 24.75 24 1.38
20 30.50 2.50 23.00 505 27.00 24 1.38
22 33.00 2.63 25.25 640 29.25 24 1.63
24 36.00 2.75 27.25 790 32.00 24 1.63

ANSI / ASME B16.5 Class 300 Socket-Weld Flange Dimensions

Class 300 Socket-Weld Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket (D) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 0.62 0.88 0.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 0.82 1.09 0.44 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 1.05 1.36 0.50 3 3.50 4 0.75
1 1/4 5.25 0.75 2.50 1.06 2.50 1.38 1.70 0.56 4 3.88 4 0.75
1 1/2 6.13 0.81 2.88 1.19 2.75 1.61 1.95 0.63 6 4.50 4 0.88
2 6.50 0.88 3.63 1.31 3.31 2.07 2.44 0.69 7 5.00 8 0.75
2 1/2 7.50 1.00 4.13 1.50 3.94 2.47 2.94 0.75 10 5.88 8 0.88
3 8.25 1.13 5.00 1.69 4.63 3.07 3.57 0.81 13 6.63 8 0.88

ANSI / ASME B16.5 Class 300 Threaded Flange Dimensions

Class 300 Threaded Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 3 3.50 4 0.75
1 1/4 5.25 0.75 2.50 1.06 2.50 4 3.88 4 0.75
1 1/2 6.13 0.81 2.88 1.19 2.75 6 4.50 4 0.88
2 6.50 0.88 3.63 1.31 3.31 7 5.00 8 0.75
2 1/2 7.50 1.00 4.13 1.50 3.94 10 5.88 8 0.88
3 8.25 1.13 5.00 1.69 4.63 13 6.63 8 0.88
3 1/2 9.00 1.19 5.50 1.75 5.25 17 7.25 8 0.88
4 10.00 1.25 6.19 1.88 5.75 22 7.88 8 0.88
5 11.00 1.38 7.31 2.00 7.00 28 9.25 8 0.88
6 12.50 1.44 8.50 2.06 8.13 39 10.63 12 0.88
8 15.00 1.63 10.63 2.44 10.25 58 13.00 12 1.00
10 17.50 1.88 12.75 2.62 12.63 81 15.25 16 1.13
12 20.50 2.00 15.00 2.88 14.75 115 17.75 16 1.25
14 23.00 2.13 16.25 3.00 16.75 165 20.25 20 1.25
16 25.50 2.25 18.50 3.25 19.00 190 22.50 20 1.38
18 28.00 2.38 21.00 3.50 21.00 250 24.75 24 1.38
20 30.50 2.50 23.00 3.75 23.13 315 27.00 24 1.38
22 33.00 2.63 25.25 4.00 25.25 370 29.25 24 1.63
24 36.00 2.75 27.25 4.19 27.63 475 32.00 24 1.63

ANSI / ASME B16.5 Class 300 Lap Joint Flange Dimensions

Class 300 Lap Joint Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 0.88 1.50 0.13 0.90 2 2.63 4 0.63
3/4 4.63 0.63 1.00 1.88 0.13 1.11 3 3.25 4 0.75
1 4.88 0.69 1.06 2.13 0.13 1.38 3 3.50 4 0.75
1 1/4 5.25 0.75 1.06 2.50 0.19 1.72 4 3.88 4 0.75
1 1/2 6.13 0.81 1.19 2.75 0.25 1.97 6 4.50 4 0.88
2 6.50 0.88 1.31 3.31 0.31 2.46 7 5.00 8 0.75
2 1/2 7.50 1.00 1.50 3.94 0.31 2.97 10 5.88 8 0.88
3 8.25 1.13 1.69 4.63 0.38 3.60 13 6.63 8 0.88
3 1/2 9.00 1.19 1.75 5.25 0.44 4.10 17 7.25 8 0.88
4 10.00 1.25 1.88 5.75 0.44 4.60 22 7.88 8 0.88
5 11.00 1.38 2.00 7.00 0.44 5.69 28 9.25 8 0.88
6 12.50 1.44 2.06 8.13 0.50 6.75 39 10.63 12 0.88
8 15.00 1.63 2.44 10.25 0.50 8.75 58 13.00 12 1.00
10 17.50 1.88 3.75 12.63 0.50 10.92 91 15.25 16 1.13
12 20.50 2.00 4.00 14.75 0.50 12.92 140 17.75 16 1.25
14 23.00 2.13 4.38 16.75 0.50 14.18 190 20.25 20 1.25
16 25.50 2.25 4.75 19.00 0.50 16.19 250 22.50 20 1.38
18 28.00 2.38 5.13 21.00 0.50 18.20 295 24.75 24 1.38
20 30.50 2.50 5.50 23.13 0.50 20.25 370 27.00 24 1.38
22 33.00 2.63 5.75 25.25 0.50 22.25 435 29.25 24 1.63
24 36.00 2.75 6.00 27.63 0.50 24.25 550 32.00 24 1.63

ANSI / ASME B16.5 Class 400 Weld Neck Flange Dimensions

Class 400 Weld Neck Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2.06 1.50 Specified by purchaser 2 2.63 4 0.63
3/4 4.63 0.63 1.69 2.25 1.88 Specified by purchaser 4 3.25 4 0.75
1 4.88 0.69 2.00 2.44 2.13 Specified by purchaser 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 2.63 2.50 Specified by purchaser 6 3.88 4 0.75
1 1/2 6.13 0.88 2.88 2.75 2.75 Specified by purchaser 8 4.50 4 0.88
2 6.50 1.00 3.63 2.88 3.31 Specified by purchaser 12 5.00 8 0.75
2 1/2 7.50 1.13 4.13 3.13 3.94 Specified by purchaser 18 5.88 8 0.88
3 8.25 1.25 5.00 3.25 4.63 Specified by purchaser 23 6.63 8 0.88
3 1/2 9.00 1.38 5.50 3.38 5.25 Specified by purchaser 26 7.25 8 1.00
4 10.00 1.38 6.19 3.50 5.75 Specified by purchaser 35 7.88 8 1.00
5 11.00 1.50 7.31 4.00 7.00 Specified by purchaser 43 9.25 8 1.00
6 12.50 1.63 8.50 4.06 8.13 Specified by purchaser 57 10.63 12 1.00
8 15.00 1.88 10.63 4.63 10.25 Specified by purchaser 89 13.00 12 1.13
10 17.50 2.13 12.75 4.88 12.63 Specified by purchaser 125 15.25 16 1.25
12 20.50 2.25 15.00 5.38 14.75 Specified by purchaser 175 17.75 16 1.38
14 23.00 2.38 16.25 5.88 16.75 Specified by purchaser 230 20.25 20 1.38
16 25.50 2.50 18.50 6.00 19.00 Specified by purchaser 295 22.50 20 1.50
18 28.00 2.63 21.00 6.50 21.00 Specified by purchaser 350 24.75 24 1.50
20 30.50 2.75 23.00 6.63 23.13 Specified by purchaser 425 27.00 24 1.63
22 33.00 2.88 25.25 6.75 25.25 Specified by purchaser 505 29.25 24 1.75
24 36.00 3.00 27.25 6.88 27.63 Specified by purchaser 620 32.00 24 1.88

ANSI / ASME B16.5 Class 400 Slip On Flange Dimensions

Class 400 Slip On Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 0.88 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 1.09 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 1.36 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 1.70 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 1.95 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 2.44 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 2.94 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 3.57 16 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 5.25 4.07 21 7.25 8 1.00
4 10.00 1.38 6.19 2.00 5.75 4.57 26 7.88 8 1.00
5 11.00 1.50 7.31 2.13 7.00 5.66 31 9.25 8 1.00
6 12.50 1.63 8.50 2.25 8.13 6.72 44 10.63 12 1.00
8 15.00 1.88 10.63 2.69 10.25 8.72 67 13.00 12 1.13
10 17.50 2.13 12.75 2.88 12.63 10.88 91 15.25 16 1.25
12 20.50 2.25 15.00 3.13 14.75 12.88 130 17.75 16 1.38
14 23.00 2.38 16.25 3.31 16.75 14.14 180 20.25 20 1.38
16 25.50 2.50 18.50 3.69 19.00 16.16 235 22.50 20 1.50
18 28.00 2.63 21.00 3.88 21.00 18.18 285 24.75 24 1.50
20 30.50 2.75 23.00 4.00 23.13 20.20 345 27.00 24 1.63
22 33.00 2.88 25.25 4.25 25.25 22.22 405 29.25 24 1.75
24 36.00 3.00 27.25 4.50 27.63 24.25 510 32.00 24 1.88

ANSI / ASME B16.5 Class 400 Blind Flange Dimensions

Class 400 Blind Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 3 3.25 4 0.75
1 4.88 0.69 2.00 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 8 4.50 4 0.88
2 6.50 1.00 3.63 10 5.00 8 0.75
2 1/2 7.50 1.13 4.13 15 5.88 8 0.88
3 8.25 1.25 5.00 20 6.63 8 0.88
3 1/2 9.00 1.38 5.50 29 7.25 8 1.00
4 10.00 1.38 6.19 33 7.88 8 1.00
5 11.00 1.50 7.31 44 9.25 8 1.00
6 12.50 1.63 8.50 61 10.63 12 1.00
8 15.00 1.88 10.63 100 13.00 12 1.13
10 17.50 2.13 12.75 155 15.25 16 1.25
12 20.50 2.25 15.00 225 17.75 16 1.38
14 23.00 2.38 16.25 290 20.25 20 1.38
16 25.50 2.50 18.50 370 22.50 20 1.50
18 28.00 2.63 21.00 455 24.75 24 1.50
20 30.50 2.75 23.00 587 27.00 24 1.63
22 33.00 2.88 25.25 720 29.25 24 1.75
24 36.00 3.00 27.25 890 32.00 24 1.88

ANSI / ASME B16.5 Class 400 Threaded Flange Dimensions

Class 400 Threaded Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 16 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 5.25 21 7.25 8 1.00
4 10.00 1.38 6.19 2.00 5.75 26 7.88 8 1.00
5 11.00 1.50 7.31 2.13 7.00 31 9.25 8 1.00
6 12.50 1.63 8.50 2.25 8.13 44 10.63 12 1.00
8 15.00 1.88 10.63 2.69 10.25 67 13.00 12 1.13
10 17.50 2.13 12.75 2.88 12.63 91 15.25 16 1.25
12 20.50 2.25 15.00 3.13 14.75 130 17.75 16 1.38
14 23.00 2.38 16.25 3.31 16.75 180 20.25 20 1.38
16 25.50 2.50 18.50 3.69 19.00 235 22.50 20 1.50
18 28.00 2.63 21.00 3.88 21.00 285 24.75 24 1.50
20 30.50 2.75 23.00 4.00 23.13 345 27.00 24 1.63
22 33.00 2.88 25.25 4.25 25.25 405 29.25 24 1.75
24 36.00 3.00 27.25 4.50 27.63 510 32.00 24 1.88

ANSI / ASME B16.5 Class 400 Lap Joint Flange Dimensions

Class 400 Lap Joint Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 0.13 0.90 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 0.13 1.11 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 0.13 1.38 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 0.19 1.72 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 0.25 1.97 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 0.31 2.46 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 0.31 2.97 12 5.88 8 0.88
3 8.25 1.25 5.00 1.81 0.38 3.60 15 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 0.38 4.10 20 7.25 8 1.00
4 10.00 1.38 2.00 5.75 0.44 4.60 25 7.88 8 1.00
5 11.00 1.50 2.13 7.00 0.44 5.69 29 9.25 8 1.00
6 12.50 1.63 2.25 8.13 0.50 6.75 42 10.63 12 1.00
8 15.00 1.88 2.69 10.25 0.50 8.75 64 13.00 12 1.13
10 17.50 2.13 4.00 12.63 0.50 10.92 110 15.25 16 1.25
12 20.50 2.25 4.25 14.75 0.50 12.92 150 17.75 16 1.38
14 23.00 2.38 4.63 16.75 0.50 14.18 205 20.25 20 1.38
16 25.50 2.50 5.00 19.00 0.50 16.19 260 22.50 20 1.50
18 28.00 2.63 5.38 21.00 0.50 18.20 315 24.75 24 1.50
20 30.50 2.75 5.75 23.13 0.50 20.25 385 27.00 24 1.63
22 33.00 2.88 6.00 25.25 0.50 22.25 455 29.25 24 1.75
24 36.00 3.00 6.25 27.63 0.50 24.25 570 32.00 24 1.88

ANSI / ASME B16.5 Class 600 Weld Neck Flange Dimensions

Class 600 Weld Neck Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2.06 0.84 1.50 Specified by purchaser 2 2.63 4 0.63
3/4 4.63 0.63 1.69 2.25 1.05 1.88 Specified by purchaser 4 3.25 4 0.75
1 4.88 0.69 2.00 2.44 1.32 2.13 Specified by purchaser 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 2.63 1.66 2.50 Specified by purchaser 6 3.88 4 0.75
1 1/2 6.13 0.88 2.88 2.75 1.90 2.75 Specified by purchaser 8 4.50 4 0.88
2 6.50 1.00 3.63 2.88 2.38 3.31 Specified by purchaser 12 5.00 8 0.75
2 1/2 7.50 1.13 4.13 3.13 2.88 3.94 Specified by purchaser 18 5.88 8 0.88
3 8.25 1.25 5.00 3.25 3.50 4.63 Specified by purchaser 23 6.63 8 0.88
3 1/2 9.00 1.38 5.50 3.38 4.00 5.25 Specified by purchaser 26 7.25 8 1.00
4 10.75 1.50 6.19 4.00 4.50 6.00 Specified by purchaser 42 8.50 8 1.00
5 13.00 1.75 7.31 4.50 5.56 7.44 Specified by purchaser 68 10.50 8 1.13
6 14.00 1.88 8.50 4.63 6.63 8.75 Specified by purchaser 81 11.50 12 1.13
8 16.50 2.19 10.63 5.25 8.63 10.75 Specified by purchaser 120 13.75 12 1.25
10 20.00 2.50 12.75 6.00 10.75 13.50 Specified by purchaser 190 17.00 16 1.38
12 22.00 2.63 15.00 6.13 12.75 15.75 Specified by purchaser 225 19.25 20 1.38
14 23.75 2.75 16.25 6.50 14.00 17.00 Specified by purchaser 280 20.75 20 1.50
16 27.00 3.00 18.50 7.00 16.00 19.50 Specified by purchaser 390 23.75 20 1.63
18 29.25 3.25 21.00 7.25 18.00 21.50 Specified by purchaser 475 25.75 20 1.75
20 32.00 3.50 23.00 7.50 20.00 24.00 Specified by purchaser 590 28.50 24 1.75
22 34.25 3.75 25.25 7.75 22.00 26.25 Specified by purchaser 720 30.63 24 1.88
24 37.00 4.00 27.25 8.00 24.00 28.25 Specified by purchaser 830 33.00 24 2.00

ANSI / ASME B16.5 Class 600 Slip On Flange Dimensions

Class 600 Slip On Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 0.88 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 1.09 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 1.36 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 1.70 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 1.95 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 2.44 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 2.94 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 3.57 16 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 5.25 4.07 21 7.25 8 1.00
4 10.75 1.50 6.19 2.13 6.00

4.57

 37 8.50 8 1.00
5 13.00 1.75 7.31 2.38 7.44 5.66 63 10.50 8 1.13
6 14.00 1.88 8.50 2.63 8.75 6.72 80 11.50 12 1.13
8 16.50 2.19 10.63 3.00 10.75 8.72 115 13.75 12 1.25
10 20.00 2.50 12.75 3.38 13.50 10.88 170 17.00 16 1.38
12 22.00 2.63 15.00 3.63 15.75 12.88 200 19.25 20 1.38
14 23.75 2.75 16.25 3.69 17.00 14.14 230 20.75 20 1.50
16 27.00 3.00 18.50 4.19 19.50 16.16 330 23.75 20 1.63
18 29.25 3.25 21.00 4.63 21.50 18.18 400 25.75 20 1.75
20 32.00 3.50 23.00 5.00 24.00 20.20 510 28.50 24 1.75
22 34.25 3.75 25.25 5.25 26.25 22.22 590 30.63 24 1.88
24 37.00 4.00 27.25 5.50 28.25 24.25 730 33.00 24 2.00

ANSI / ASME B16.5 Class 600 Blind Flange Dimensions

Class 600 Blind Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 3 3.25 4 0.75
1 4.88 0.69 2.00 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 8 4.50 4 0.88
2 6.50 1.00 3.63 10 5.00 8 0.75
2 1/2 7.50 1.13 4.13 15 5.88 8 0.88
3 8.25 1.25 5.00 20 6.63 8 0.88
3 1/2 9.00 1.38 5.50 29 7.25 8 1.00
4 10.75 1.50 6.19 41 8.50 8 1.00
5 13.00 1.75 7.31 68 10.50 8 1.13
6 14.00 1.88 8.50 86 11.50 12 1.13
8 16.50 2.19 10.63 140 13.75 12 1.25
10 20.00 2.50 12.75 230 17.00 16 1.38
12 22.00 2.63 15.00 295 19.25 20 1.38
14 23.75 2.75 16.25 355 20.75 20 1.50
16 27.00 3.00 18.50 495 23.75 20 1.63
18 29.25 3.25 21.00 630 25.75 20 1.75
20 32.00 3.50 23.00 810 28.50 24 1.75
22 34.25 3.75 25.25 1000 30.63 24 1.88
24 37.00 4.00 27.25 1250 33.00 24 2.00

ANSI / ASME B16.5 Class 600 Threaded Flange Dimensions

Class 600 Threaded Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 16 6.63 8 0.88
3 1/2 9.00 1.38 5.50 1.94 5.25 21 7.25 8 1.00
4 10.75 1.50 6.19 2.13 6.00 37 8.50 8 1.00
5 13.00 1.75 7.31 2.38 7.44 63 10.50 8 1.13
6 14.00 1.88 8.50 2.63 8.75 80 11.50 12 1.13
8 16.50 2.19 10.63 3.00 10.75 115 13.75 12 1.25
10 20.00 2.50 12.75 3.38 13.50 170 17.00 16 1.38
12 22.00 2.63 15.00 3.63 15.75 200 19.25 20 1.38
14 23.75 2.75 16.25 3.69 17.00 230 20.75 20 1.50
16 27.00 3.00 18.50 4.19 19.50 330 23.75 20 1.63
18 29.25 3.25 21.00 4.63 21.50 400 25.75 20 1.75
20 32.00 3.50 23.00 5.00 24.00 510 28.50 24 1.75
22 34.25 3.75 25.25 5.25 26.25 590 30.63 24 1.88
24 37.00 4.00 27.25 5.50 28.25 730 33.00 24 2.00

ANSI / ASME B16.5 Class 600 Lap Joint Flange Dimensions

Class 600 Lap Joint Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 0.88 1.50 0.13 0.90 2 2.63 4 0.63
3/4 4.63 0.63 1.00 1.88 0.13 1.11 3 3.25 4 0.75
1 4.88 0.69 1.06 2.13 0.13 1.38 4 3.50 4 0.75
1 1/4 5.25 0.81 1.13 2.50 0.19 1.72 5 3.88 4 0.75
1 1/2 6.13 0.88 1.25 2.75 0.25 1.97 7 4.50 4 0.88
2 6.50 1.00 1.44 3.31 0.31 2.46 9 5.00 8 0.75
2 1/2 7.50 1.13 1.63 3.94 0.31 2.97 12 5.88 8 0.88
3 8.25 1.25 1.81 4.63 0.38 3.60 15 6.63 8 0.88
3 1/2 9.00 1.38 1.94 5.25 0.38 4.10 20 7.25 8 1.00
4 10.75 1.50 2.13 6.00 0.44 4.60 36 8.50 8 1.00
5 13.00 1.75 2.38 7.44 0.44 5.69 61 10.50 8 1.13
6 14.00 1.88 2.63 8.75 0.50 6.75 78 11.50 12 1.13
8 16.50 2.19 3.00 10.75 0.50 8.75 110 13.75 12 1.25
10 20.00 2.50 4.38 13.50 0.50 10.92 170 17.00 16 1.38
12 22.00 2.63 4.63 15.75 0.50 12.92 200 19.25 20 1.38
14 23.75 2.75 5.00 17.00 0.50 14.18 250 20.75 20 1.50
16 27.00 3.00 5.50 19.50 0.50 16.19 365 23.75 20 1.63
18 29.25 3.25 6.00 21.50 0.50 18.20 435 25.75 20 1.75
20 32.00 3.50 6.50 24.00 0.50 20.25 570 28.50 24 1.75
22 34.25 3.75 6.88 26.25 0.50 22.25 670 30.63 24 1.88
24 37.00 4.00 7.25 28.25 0.50 24.25 810 33.00 24 2.00

ANSI / ASME B16.5 Class 600 Socket Weld Flange Dimensions

Class 600 Socket Weld Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket (D) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 3.75 0.56 1.38 0.88 1.50 Specified by purchaser 0.88 0.38 2 2.63 4 0.63
3/4 4.63 0.63 1.69 1.00 1.88 Specified by purchaser 1.09 0.44 3 3.25 4 0.75
1 4.88 0.69 2.00 1.06 2.13 Specified by purchaser 1.36 0.50 4 3.50 4 0.75
1 1/4 5.25 0.81 2.50 1.13 2.50 Specified by purchaser 1.70 0.56 5 3.88 4 0.75
1 1/2 6.13 0.88 2.88 1.25 2.75 Specified by purchaser 1.95 0.63 7 4.50 4 0.88
2 6.50 1.00 3.63 1.44 3.31 Specified by purchaser 2.44 0.69 9 5.00 8 0.75
2 1/2 7.50 1.13 4.13 1.63 3.94 Specified by purchaser 2.94 0.75 13 5.88 8 0.88
3 8.25 1.25 5.00 1.81 4.63 Specified by purchaser 3.57 0.81 16 6.63 8 0.88

ANSI / ASME B16.5 Class 900 Weld Neck Flange Dimensions

Class 900 Weld Neck Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 2.38 1.50 Specified by purchaser 5 3.25 4 0.88
3/4 5.13 1.00 1.69 2.75 1.75 Specified by purchaser 6 3.50 4 0.88
1 5.88 1.13 2.00 2.88 2.06 Specified by purchaser 9 4.00 4 1.00
1 1/4 6.25 1.13 2.50 2.88 2.50 Specified by purchaser 10 4.38 4 1.00
1 1/2 7.00 1.25 2.88 3.25 2.75 Specified by purchaser 13 4.88 4 1.13
2 8.50 1.50 3.63 4.00 4.13 Specified by purchaser 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 4.06 4.88 Specified by purchaser 36 7.50 8 1.13
3 9.50 1.50 5.00 4.00 5.00 Specified by purchaser 31 7.50 8 1.00
4 11.50 1.75 6.19 4.50 6.25 Specified by purchaser 53 9.25 8 1.25
5 13.75 2.00 7.31 5.00 7.50 Specified by purchaser 86 11.00 8 1.38
6 15.00 2.19 8.50 5.50 9.25 Specified by purchaser 110 12.50 12 1.25
8 18.50 2.50 10.63 6.38 11.75 Specified by purchaser 175 15.50 12 1.50
10 21.50 2.75 12.75 7.25 14.50 Specified by purchaser 260 18.50 16 1.50
12 24.00 3.13 15.00 7.88 16.50 Specified by purchaser 325 21.00 20 1.50
14 25.25 3.38 16.25 8.38 17.75 Specified by purchaser 400 22.00 20 1.63
16 27.75 3.50 18.50 8.50 20.00 Specified by purchaser 495 24.25 20 1.75
18 31.00 4.00 21.00 9.00 22.25 Specified by purchaser 680 27.00 20 2.00
20 33.75 4.25 23.00 9.75 24.50 Specified by purchaser 830 29.50 20 2.13
24 41.00 5.50 27.25 11.50 29.50 Specified by purchaser 1500 35.50 20 2.63

ANSI / ASME B16.5 Class 900 Slip On Flange Dimensions

Class 900 Slip On Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 0.88 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 1.09 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 1.36 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 1.70 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 1.95 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 2.44 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 2.94 36 7.50 8 1.13
3 9.50 1.50 5.00 2.13 5.00 3.57 26 7.50 8 1.00
4 11.50 1.75 6.19 2.75 6.25 4.57 53 9.25 8 1.25
5 13.75 2.00 7.31 3.13 7.50 5.66 83 11.00 8 1.38
6 15.00 2.19 8.50 3.38 9.25 6.72 110 12.50 12 1.25
8 18.50 2.50 10.63 4.00 11.75 8.72 170 15.50 12 1.50
10 21.50 2.75 12.75 4.25 14.50 10.88 245 18.50 16 1.50
12 24.00 3.13 15.00 4.63 16.50 12.88 325 21.00 20 1.50
14 25.25 3.38 16.25 5.13 17.75 14.14 400 22.00 20 1.63
16 27.75 3.50 18.50 5.25 20.00 16.16 425 24.25 20 1.75
18 31.00 4.00 21.00 6.00 22.25 18.18 600 27.00 20 2.00
20 33.75 4.25 23.00 6.25 24.50 20.20 730 29.50 20 2.13
24 41.00 5.50 27.25 8.00 29.50 24.25 1400 35.50 20 2.63

ANSI / ASME B16.5 Class 900 Blind Flange Dimensions

Class 900 Blind Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 4 3.25 4 0.88
3/4 5.13 1.00 1.69 6 3.50 4 0.88
1 5.88 1.13 2.00 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 13 4.88 4 1.13
2 8.50 1.50 3.63 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 35 7.50 8 1.13
3 9.50 1.50 5.00 29 7.50 8 1.00
4 11.50 1.75 6.19 54 9.25 8 1.25
5 13.75 2.00 7.31 87 11.00 8 1.38
6 15.00 2.19 8.50 115 12.50 12 1.25
8 18.50 2.50 10.63 200 15.50 12 1.50
10 21.50 2.75 12.75 290 18.50 16 1.50
12 24.00 3.13 15.00 415 21.00 20 1.50
14 25.25 3.38 16.25 520 22.00 20 1.63
16 27.75 3.50 18.50 600 24.25 20 1.75
18 31.00 4.00 21.00 850 27.00 20 2.00
20 33.75 4.25 23.00 1075 29.50 20 2.13
24 41.00 5.50 27.25 2025 35.50 20 2.63

ANSI / ASME B16.5 Class 900 Threaded Flange Dimensions

Class 900 Threaded Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 36 7.50 8 1.13
3 9.50 1.50 5.00 2.13 5.00 26 7.50 8 1.00
4 11.50 1.75 6.19 2.75 6.25 53 9.25 8 1.25
5 13.75 2.00 7.31 3.13 7.50 83 11.00 8 1.38
6 15.00 2.19 8.50 3.38 9.25 110 12.50 12 1.25
8 18.50 2.50 10.63 4.00 11.75 170 15.50 12 1.50
10 21.50 2.75 12.75 4.25 14.50 245 18.50 16 1.50
12 24.00 3.13 15.00 4.63 16.50 325 21.00 20 1.50
14 25.25 3.38 16.25 5.13 17.75 400 22.00 20 1.63
16 27.75 3.50 18.50 5.25 20.00 425 24.25 20 1.75
18 31.00 4.00 21.00 6.00 22.25 600 27.00 20 2.00
20 33.75 4.25 23.00 6.25 24.50 730 29.50 20 2.13
24 41.00 5.50 27.25 8.00 29.50 1400 35.50 20 2.63

ANSI / ASME B16.5 Class 900 Lap Joint Flange Dimensions

Class 900 Lap Joint Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 0.13 1.50 0.90 4 3.25 4
3/4 5.13 1.00 1.69 1.38 0.13 1.75 1.11 5 3.50 4
1 5.88 1.13 2.00 1.63 0.13 2.06 1.38 8 4.00 4
1 1/4 6.25 1.13 2.50 1.63 0.19 2.50 1.72 9 4.38 4
1 1/2 7.00 1.25 2.88 1.75 0.25 2.75 1.97 12 4.88 4
2 8.50 1.50 3.63 2.25 0.31 4.13 2.46 25 6.50 8
2 1/2 9.63 1.63 4.13 2.50 0.31 4.88 2.97 35 7.50 8
3 9.50 1.50 2.13 5.00 0.38 3.60 25 7.50 8 1.00
4 11.50 1.75 2.75 6.25 0.44 4.60 51 9.25 8 1.25
5 13.75 2.00 3.13 7.50 0.50 5.69 81 11.00 8 1.38
6 15.00 2.19 3.38 9.25 0.50 6.75 105 12.50 12 1.25
8 18.50 2.50 4.50 11.75 0.50 8.75 190 15.50 12 1.50
10 21.50 2.75 5.00 14.50 0.50 10.92 275 18.50 16 1.50
12 24.00 3.13 5.63 16.50 0.50 12.92 370 21.00 20 1.50
14 25.25 3.38 6.13 17.75 0.50 14.18 415 22.00 20 1.63
16 27.75 3.50 6.50 20.00 0.50 16.19 465 24.25 20 1.75
18 31.00 4.00 7.50 22.25 0.50 18.20 650 27.00 20 2.00
20 33.75 4.25 8.25 24.50 0.50 20.25 810 29.50 20 2.13
24 41.00 5.50 10.50 29.50 0.50 24.25 1550 35.50 20 2.63

ANSI / ASME B16.5 Class 900 Socket Weld Flange Dimensions

Class 900 Socket Weld Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket (D) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 Specified by purchaser 0.88 0.38 5 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 Specified by purchaser 1.09 0.44 6 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 Specified by purchaser 1.36 0.50 9 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 Specified by purchaser 1.70 0.56 10 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 Specified by purchaser 1.95 0.63 13 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 Specified by purchaser 2.44 0.69 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 Specified by purchaser 2.94 0.75 36 7.50 8 1.13

ANSI / ASME B16.5 Class 1500 Weld Neck Flange Dimensions

Class 1500 Weld Neck Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 2.38 0.84 1.50 Specified by purchaser 5 3.25 4 0.88
3/4 5.13 1.00 1.69 2.75 1.05 1.75 Specified by purchaser 6 3.50 4 0.88
1 5.88 1.13 2.00 2.88 1.32 2.06 Specified by purchaser 9 4.00 4 1.00
1 1/4 6.25 1.13 2.50 2.88 1.66 2.50 Specified by purchaser 10 4.38 4 1.00
1 1/2 7.00 1.25 2.88 3.25 1.90 2.75 Specified by purchaser 13 4.88 4 1.13
2 8.50 1.50 3.63 4.00 2.38 4.13 Specified by purchaser 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 4.06 2.88 4.88 Specified by purchaser 36 7.50 8 1.13
3 10.50 1.88 5.00 4.63 3.50 5.25 Specified by purchaser 48 8.00 8 1.25
4 12.25 2.13 6.19 4.88 4.50 6.38 Specified by purchaser 73 9.50 8 1.38
5 14.75 2.88 7.31 6.13 5.56 7.75 Specified by purchaser 130 11.50 8 1.63
6 15.50 3.25 8.50 6.75 6.63 9.00 Specified by purchaser 165 12.50 12 1.50
8 19.00 3.63 10.63 8.38 8.63 11.50 Specified by purchaser 275 15.50 12 1.75
10 23.00 4.25 12.75 10.00 10.75 14.50 Specified by purchaser 455 19.00 12 2.00
12 26.50 4.88 15.00 11.13 12.75 17.75 Specified by purchaser 690 22.50 16 2.13
14 29.50 5.25 16.25 11.75 14.00 19.50 Specified by purchaser 940 25.00 16 2.38
16 32.50 5.75 18.50 12.25 16.00 21.75 Specified by purchaser 1250 27.75 16 2.63
18 36.00 6.38 21.00 12.88 18.00 23.50 Specified by purchaser 1625 30.50 16 2.88
20 38.75 7.00 23.00 14.00 20.00 25.25 Specified by purchaser 2050 32.75 16 3.13
24 46.00 8.00 27.25 16.00 24.00 30.00 Specified by purchaser 3325 39.00 16 3.63

ANSI / ASME B16.5 Class 1500 Slip On Flange Dimensions

Class 1500 Slip On Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 0.88 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 1.09 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 1.36 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 1.70 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 1.95 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 2.44 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 2.94 36 7.50 8 1.13
3 10.50 1.88 5.00 2.88 5.25 3.57 48 8.00 8 1.25
4 12.25 2.13 6.19 3.56 6.38 4.57 73 9.50 8 1.38
5 14.75 2.88 7.31 4.13 7.75 5.66 130 11.50 8 1.63
6 15.50 3.25 8.50 4.69 9.00 6.72 165 12.50 12 1.50
8 19.00 3.63 10.63 5.63 11.50 8.72 260 15.50 12 1.75
10 23.00 4.25 12.75 6.25 14.50 10.88 435 19.00 12 2.00
12 26.50 4.88 15.00 7.13 17.75 12.88 580 22.50 16 2.13

ANSI / ASME B16.5 Class 1500 Blind Flange Dimensions

Class 1500 Blind Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 4 3.25 4 0.88
3/4 5.13 1.00 1.69 6 3.50 4 0.88
1 5.88 1.13 2.00 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 13 4.88 4 1.13
2 8.50 1.50 3.63 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 35 7.50 8 1.13
3 10.50 1.88 5.00 48 8.00 8 1.25
4 12.25 2.13 6.19 73 9.50 8 1.38
5 14.75 2.88 7.31 140 11.50 8 1.63
6 15.50 3.25 8.50 160 12.50 12 1.50
8 19.00 3.63 10.63 300 15.50 12 1.75
10 23.00 4.25 12.75 510 19.00 12 2.00
12 26.50 4.88 15.00 690 22.50 16 2.13
14 29.50 5.25 16.25 975 25.00 16 2.38
16 32.50 5.75 18.50 1300 27.75 16 2.63
18 36.00 6.38 21.00 1750 30.50 16 2.88
20 38.75 7.00 23.00 2225 32.75 16 3.13
24 46.00 8.00 27.25 3625 39.00 16 3.63

ANSI / ASME B16.5 Class 1500 Threaded Flange Dimensions

Class 1500 Threaded Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 36 7.50 8 1.13
3 10.50 1.88 5.00 2.88 5.25 48 8.00 8 1.25
4 12.25 2.13 6.19 3.56 6.38 73 9.50 8 1.38
5 14.75 2.88 7.31 4.13 7.75 130 11.50 8 1.63
6 15.50 3.25 8.50 4.69 9.00 165 12.50 12 1.50
8 19.00 3.63 10.63 5.63 11.50 260 15.50 12 1.75
10 23.00 4.25 12.75 6.25 14.50 435 19.00 12 2.00
12 26.50 4.88 15.00 7.13 17.75 580 22.50 16 2.13

ANSI / ASME B16.5 Class 1500 Lap Joint Flange Dimensions

Class 1500 Lap Joint Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.25 1.50 0.13 0.90 4 3.25 4 0.88
3/4 5.13 1.00 1.38 1.75 0.13 1.11 5 3.50 4 0.88
1 5.88 1.13 1.63 2.06 0.13 1.38 8 4.00 4 1.00
1 1/4 6.25 1.13 1.63 2.50 0.19 1.72 9 4.38 4 1.00
1 1/2 7.00 1.25 1.75 2.75 0.25 1.97 12 4.88 4 1.13
2 8.50 1.50 2.25 4.13 0.31 2.46 25 6.50 8 1.00
2 1/2 9.63 1.63 2.50 4.88 0.31 2.97 35 7.50 8 1.13
3 10.50 1.88 2.88 5.25 0.38 3.60 47 8.00 8 1.25
4 12.25 2.13 3.56 6.38 0.38 4.60 75 9.50 8 1.38
5 14.75 2.88 4.13 7.75 0.44 5.69 140 11.50 8 1.63
6 15.50 3.25 4.69 9.00 0.44 6.75 170 12.50 12 1.50
8 19.00 3.63 5.63 11.50 0.50 8.75 285 15.50 12 1.75
10 23.00 4.25 7.00 14.50 0.50 10.92 485 19.00 12 2.00
12 26.50 4.88 8.63 17.75 0.50 12.92 630 22.50 16 2.13
14 29.50 5.25 9.50 19.50 0.50 14.18 890 25.00 16 2.38
16 32.50 5.75 10.25 21.75 0.50 16.19 1150 27.75 16 2.63
18 36.00 6.38 10.88 23.50 0.50 18.20 1475 30.50 16 2.88
20 38.75 7.00 11.50 25.25 0.50 20.25 1775 32.75 16 3.13
24 46.00 8.00 13.00 30.00 0.50 24.25 2825 39.00 16 3.63

ANSI / ASME B16.5 Class 1500 Socket Weld Flange Dimensions

Class 1500 Socket Weld Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B1) Bore (B2) Depth of Socket (D) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 4.75 0.88 1.38 1.25 1.50 Specified by purchaser 0.88 0.38 4 3.25 4 0.88
3/4 5.13 1.00 1.69 1.38 1.75 Specified by purchaser 1.09 0.44 5 3.50 4 0.88
1 5.88 1.13 2.00 1.63 2.06 Specified by purchaser 1.36 0.50 8 4.00 4 1.00
1 1/4 6.25 1.13 2.50 1.63 2.50 Specified by purchaser 1.70 0.56 9 4.38 4 1.00
1 1/2 7.00 1.25 2.88 1.75 2.75 Specified by purchaser 1.95 0.63 12 4.88 4 1.13
2 8.50 1.50 3.63 2.25 4.13 Specified by purchaser 2.44 0.69 25 6.50 8 1.00
2 1/2 9.63 1.63 4.13 2.50 4.88 Specified by purchaser 2.94 0.75 36 7.50 8 1.13

ANSI / ASME B16.5 Class 2500 Weld Neck Flange Dimensions

Class 2500 Weld Neck Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Point of Weld (A) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.38 2.88 0.84 1.69 Specified by purchaser 7 3.50 4 0.88
3/4 5.50 1.25 1.69 3.13 1.05 2.00 Specified by purchaser 8 3.75 4 0.88
1 6.25 1.38 2.00 3.50 1.32 2.25 Specified by purchaser 12 4.25 4 1.00
1 1/4 7.25 1.50 2.50 3.75 1.66 2.88 Specified by purchaser 17 5.13 4 1.13
1 1/2 8.00 1.75 2.88 4.38 1.90 3.13 Specified by purchaser 25 5.75 4 1.25
2 9.25 2.00 3.63 5.00 2.38 3.75 Specified by purchaser 42 6.75 8 1.13
2 1/2 10.50 2.25 4.13 5.63 2.88 4.50 Specified by purchaser 52 7.75 8 1.25
3 12.00 2.63 5.00 6.63 3.50 5.25 Specified by purchaser 94 9.00 8 1.38
4 14.00 3.00 6.19 7.50 4.50 6.50 Specified by purchaser 145 10.75 8 1.63
5 16.50 3.63 7.31 9.00 5.56 8.00 Specified by purchaser 245 12.75 8 1.88
6 19.00 4.25 8.50 10.75 6.63 9.25 Specified by purchaser 380 14.50 8 2.13
8 21.75 5.00 10.63 12.50 8.63 12.00 Specified by purchaser 580 17.25 12 2.13
10 26.50 6.50 12.75 16.50 10.75 14.75 Specified by purchaser 1075 21.25 12 2.63
12 30.00 7.25 15.00 18.25 12.75 17.38 Specified by purchaser 1525 24.38 12 2.88

ANSI / ASME B16.5 Class 2500 Slip On Flange Dimensions

Class 2500 Slip On Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.38 1.56 1.69 0.88 7 3.50 4 0.88
3/4 5.50 1.25 1.69 1.69 2.00 1.09 8 3.75 4 0.88
1 6.25 1.38 2.00 1.88 2.25 1.36 11 4.25 4 1.00
1 1/4 7.25 1.50 2.50 2.06 2.88 1.70 16 5.13 4 1.13
1 1/2 8.00 1.75 2.88 2.38 3.13 1.95 22 5.75 4 1.25
2 9.25 2.00 3.63 2.75 3.75 2.44 38 6.75 8 1.13
2 1/2 10.50 2.25 4.13 3.13 4.50 2.94 55 7.75 8 1.25
3 12.00 2.63 5.00 3.63 5.25 3.57 83 9.00 8 1.38
4 14.00 3.00 6.19 4.25 6.50 4.57 125 10.75 8 1.63
5 16.50 3.63 7.31 5.13 8.00 5.66 210 12.75 8 1.88
6 19.00 4.25 8.50 6.00 9.25 6.72 325 14.50 8 2.13
8 21.75 5.00 10.63 7.00 12.00 8.72 485 17.25 12 2.13
10 26.50 6.50 12.75 9.00 14.75 10.88 930 21.25 12 2.63
12 30.00 7.25 15.00 10.00 17.38 12.88 1100 24.38 12 2.88

ANSI / ASME B16.5 Class 2500 Blind Flange Dimensions

Class 2500 Blind Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.38 7 3.50 4 0.88
3/4 5.50 1.25 1.69 8 3.75 4 0.88
1 6.25 1.38 2.00 11 4.25 4 1.00
1 1/4 7.25 1.50 2.50 17 5.13 4 1.13
1 1/2 8.00 1.75 2.88 23 5.75 4 1.25
2 9.25 2.00 3.63 39 6.75 8 1.13
2 1/2 10.50 2.25 4.13 56 7.75 8 1.25
3 12.00 2.63 5.00 86 9.00 8 1.38
4 14.00 3.00 6.19 135 10.75 8 1.63
5 16.50 3.63 7.31 225 12.75 8 1.88
6 19.00 4.25 8.50 345 14.50 8 2.13
8 21.75 5.00 10.63 530 17.25 12 2.13
10 26.50 6.50 12.75 1025 21.25 12 2.63
12 30.00 7.25 15.00 1300 24.38 12 2.88

ANSI / ASME B16.5 Class 2500 Threaded Flange Dimensions

Class 2500 Threaded Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Raised Face Diameter (R) Length Thru Hub (Y) Hub Diameter (X) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.38 1.56 1.69 7 3.50 4 0.88
3/4 5.50 1.25 1.69 1.69 2.00 8 3.75 4 0.88
1 6.25 1.38 2.00 1.88 2.25 11 4.25 4 1.00
1 1/4 7.25 1.50 2.50 2.06 2.88 16 5.13 4 1.13
1 1/2 8.00 1.75 2.88 2.38 3.13 22 5.75 4 1.25
2 9.25 2.00 3.63 2.75 3.75 38 6.75 8 1.13
2 1/2 10.50 2.25 4.13 3.13 4.50 55 7.75 8 1.25
3 12.00 2.63 5.00 3.63 5.25 83 9.00 8 1.38
4 14.00 3.00 6.19 4.25 6.50 125 10.75 8 1.63
5 16.50 3.63 7.31 5.13 8.00 210 12.75 8 1.88
6 19.00 4.25 8.50 6.00 9.25 325 14.50 8 2.13
8 21.75 5.00 10.63 7.00 12.00 485 17.25 12 2.13
10 26.50 6.50 12.75 9.00 14.75 930 21.25 12 2.63
12 30.00 7.25 15.00 10.00 17.38 1100 24.38 12 2.88

ANSI / ASME B16.5 Class 2500 Lap Joint Flange Dimensions

Class 2500 Lap Joint Flange Dimensions
Nominal Pipe Size Outside Diameter (O) Thickness (T) Length Thru Hub (Y) Hub Diameter (X) Radius (r) Bore (B) Approximate Weight (lbs) Bolt Circle (C) Number of Holes Diameter of Holes
1/2 5.25 1.19 1.56 1.69 0.13 0.90 7 3.50 4 0.88
3/4 5.50 1.25 1.69 2.00 0.13 1.11 8 3.75 4 0.88
1 6.25 1.38 1.88 2.25 0.13 1.38 11 4.25 4 1.00
1 1/4 7.25 1.50 2.06 2.88 0.19 1.72 16 5.13 4 1.13
1 1/2 8.00 1.75 2.38 3.13 0.25 1.97 22 5.75 4 1.25
2 9.25 2.00 2.75 3.75 0.31 2.46 38 6.75 8 1.13
2 1/2 10.50 2.25 3.13 4.50 0.31 2.97 55 7.75 8 1.25
3 12.00 2.63 3.63 5.25 0.38 3.60 83 9.00 8 1.38
4 14.00 3.00 4.25 6.50 0.38 4.60 125 10.75 8 1.63
5 16.50 3.63 5.13 8.00 0.44 5.69 210 12.75 8 1.88
6 19.00 4.25 6.00 9.25 0.44 6.75 325 14.50 8 2.13
8 21.75 5.00 7.00 12.00 0.50 8.75 485 17.25 12 2.13
10 26.50 6.50 9.00 14.75 0.50 10.92 930 21.25 12 2.63
12 30.00 7.25 10.00 17.38 0.50 12.92 1100 24.38 12 2.88