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  • All dimensions are in inches.
  • These flanges will be furnished with a 1/16" raised face unless otherwise specified.
  • Flat face option available.
  • Standard Bore will be furnished unless otherwise specified.

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ANSI 150 Welding Neck Flange
Unit of Measure
1 

Item #

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

Bolt Circle (C)

Number of Holes

Diameter of Holes

0H150WNAN N/A 1/2 N/A 3.50 in N/A 0.44 in N/A 1.38 in N/A 1.88 in N/A 0.84 in N/A 1.19 in N/A 0.62 in N/A 2 lb N/A 2.38 in N/A 4 N/A 0.63 in
3Q150WNAN N/A 3/4 N/A 3.88 in N/A 0.50 in N/A 1.69 in N/A 2.06 in N/A 1.05 in N/A 1.50 in N/A 0.82 in N/A 2 lb N/A 2.75 in N/A 4 N/A 0.63 in
01150WNAN N/A 1 N/A 4.25 in N/A 0.56 in N/A 2.00 in N/A 2.19 in N/A 1.32 in N/A 1.94 in N/A 1.05 in N/A 3 lb N/A 3.13 in N/A 4 N/A 0.63 in
1Q150WNAN N/A 1 1/4 N/A 4.63 in N/A 0.63 in N/A 2.50 in N/A 2.25 in N/A 1.66 in N/A 2.31 in N/A 1.38 in N/A 3 lb N/A 3.50 in N/A 4 N/A 0.63 in
1H150WNAN N/A 1 1/2 N/A 5.00 in N/A 0.69 in N/A 2.88 in N/A 2.44 in N/A 1.90 in N/A 2.56 in N/A 1.61 in N/A 4 lb N/A 3.88 in N/A 4 N/A 0.63 in
02150WNAN N/A 2 N/A 6.00 in N/A 0.75 in N/A 3.63 in N/A 2.50 in N/A 2.38 in N/A 3.06 in N/A 2.07 in N/A 6 lb N/A 4.75 in N/A 4 N/A 0.75 in
2H150WNAN N/A 2 1/2 N/A 7.00 in N/A 0.88 in N/A 4.13 in N/A 2.75 in N/A 2.88 in N/A 3.56 in N/A 2.47 in N/A 8 lb N/A 5.50 in N/A 4 N/A 0.75 in
03150WNAN N/A 3 N/A 7.50 in N/A 0.94 in N/A 5.00 in N/A 2.75 in N/A 3.50 in N/A 4.25 in N/A 3.07 in N/A 10 lb N/A 6.00 in N/A 4 N/A 0.75 in
3H150WNAN N/A 3 1/2 N/A 8.50 in N/A 0.94 in N/A 5.50 in N/A 2.81 in N/A 4.00 in N/A 4.81 in N/A 3.55 in N/A 12 lb N/A 7.00 in N/A 8 N/A 0.75 in
04150WNAN N/A 4 N/A 9.00 in N/A 0.94 in N/A 6.19 in N/A 3.00 in N/A 4.50 in N/A 5.31 in N/A 4.03 in N/A 15 lb N/A 7.50 in N/A 8 N/A 0.75 in
05150WNAN N/A 5 N/A 10.00 in N/A 0.94 in N/A 7.31 in N/A 3.50 in N/A 5.56 in N/A 6.44 in N/A 5.05 in N/A 19 lb N/A 8.50 in N/A 8 N/A 0.88 in
06150WNAN N/A 6 N/A 11.00 in N/A 1.00 in N/A 8.50 in N/A 3.50 in N/A 6.63 in N/A 7.56 in N/A 6.07 in N/A 24 lb N/A 9.50 in N/A 8 N/A 0.88 in
08150WNAN N/A 8 N/A 13.50 in N/A 1.13 in N/A 10.63 in N/A 4.00 in N/A 8.63 in N/A 9.69 in N/A 7.98 in N/A 39 lb N/A 11.75 in N/A 8 N/A 0.88 in
10150WNAN N/A 10 N/A 16.00 in N/A 1.19 in N/A 12.75 in N/A 4.00 in N/A 10.75 in N/A 12.00 in N/A 10.02 in N/A 52 lb N/A 14.25 in N/A 12 N/A 1.00 in
12150WNAN N/A 12 N/A 19.00 in N/A 1.25 in N/A 15.00 in N/A 4.50 in N/A 12.75 in N/A 14.38 in N/A 12.00 in N/A 80 lb N/A 17.00 in N/A 12 N/A 1.00 in
14150WNAN N/A 14 N/A 21.00 in N/A 1.38 in N/A 16.25 in N/A 5.00 in N/A 14.00 in N/A 15.75 in N/A 13.25 in N/A 110 lb N/A 18.75 in N/A 12 N/A 1.13 in
16150WNAN N/A 16 N/A 23.50 in N/A 1.44 in N/A 18.50 in N/A 5.00 in N/A 16.00 in N/A 18.00 in N/A 15.25 in N/A 140 lb N/A 21.25 in N/A 16 N/A 1.13 in
18150WNAN N/A 18 N/A 25.00 in N/A 1.56 in N/A 21.00 in N/A 5.50 in N/A 18.00 in N/A 19.88 in N/A 17.25 in N/A 150 lb N/A 22.75 in N/A 16 N/A 1.25 in
20150WNAN N/A 20 N/A 27.50 in N/A 1.69 in N/A 23.00 in N/A 5.69 in N/A 20.00 in N/A 22.00 in N/A 19.25 in N/A 180 lb N/A 25.00 in N/A 20 N/A 1.25 in
22150WNAN N/A 22 N/A 29.50 in N/A 1.81 in N/A 25.25 in N/A 5.88 in N/A 22.00 in N/A 24.25 in N/A 21.25 in N/A 225 lb N/A 27.25 in N/A 20 N/A 1.38 in
24150WNAN N/A 24 N/A 32.00 in N/A 1.88 in N/A 27.25 in N/A 6.00 in N/A 24.00 in N/A 26.13 in N/A 23.25 in N/A 260 lb N/A 29.50 in N/A 20 N/A 1.38 in
Unit of Measure
1