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  • All dimensions are in inches.
  • These flanges will be furnished with a 1/4" raised face unless otherwise specified.
  • Flat face option available.

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ANSI B16.5 Class 400 Weld 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

0H1500WNAN N/A 1/2 N/A 4.75 in N/A 0.88 in N/A 1.38 in N/A 2.38 in N/A 0.84 in N/A 1.50 in N/A Specified by purchaser N/A 5 lb N/A 3.25 in N/A 4 N/A 0.88 in
3Q1500WNAN N/A 3/4 N/A 5.13 in N/A 1.00 in N/A 1.69 in N/A 2.75 in N/A 1.05 in N/A 1.75 in N/A Specified by purchaser N/A 6 lb N/A 3.50 in N/A 4 N/A 0.88 in
011500WNAN N/A 1 N/A 5.88 in N/A 1.13 in N/A 2.00 in N/A 2.88 in N/A 1.32 in N/A 2.06 in N/A Specified by purchaser N/A 9 lb N/A 4.00 in N/A 4 N/A 1.00 in
1Q1500WNAN N/A 1 1/4 N/A 6.25 in N/A 1.13 in N/A 2.50 in N/A 2.88 in N/A 1.66 in N/A 2.50 in N/A Specified by purchaser N/A 10 lb N/A 4.38 in N/A 4 N/A 1.00 in
1H1500WNAN N/A 1 1/2 N/A 7.00 in N/A 1.25 in N/A 2.88 in N/A 3.25 in N/A 1.90 in N/A 2.75 in N/A Specified by purchaser N/A 13 lb N/A 4.88 in N/A 4 N/A 1.13 in
021500WNAN N/A 2 N/A 8.50 in N/A 1.50 in N/A 3.63 in N/A 4.00 in N/A 2.38 in N/A 4.13 in N/A Specified by purchaser N/A 25 lb N/A 6.50 in N/A 8 N/A 1.00 in
2H1500WNAN N/A 2 1/2 N/A 9.63 in N/A 1.63 in N/A 4.13 in N/A 4.06 in N/A 2.88 in N/A 4.88 in N/A Specified by purchaser N/A 36 lb N/A 7.50 in N/A 8 N/A 1.13 in
031500WNAN N/A 3 N/A 10.50 in N/A 1.88 in N/A 5.00 in N/A 4.63 in N/A 3.50 in N/A 5.25 in N/A Specified by purchaser N/A 48 lb N/A 8.00 in N/A 8 N/A 1.25 in
041500WNAN N/A 4 N/A 12.25 in N/A 2.13 in N/A 6.19 in N/A 4.88 in N/A 4.50 in N/A 6.38 in N/A Specified by purchaser N/A 73 lb N/A 9.50 in N/A 8 N/A 1.38 in
051500WNAN N/A 5 N/A 14.75 in N/A 2.88 in N/A 7.31 in N/A 6.13 in N/A 5.56 in N/A 7.75 in N/A Specified by purchaser N/A 130 lb N/A 11.50 in N/A 8 N/A 1.63 in
061500WNAN N/A 6 N/A 15.50 in N/A 3.25 in N/A 8.50 in N/A 6.75 in N/A 6.63 in N/A 9.00 in N/A Specified by purchaser N/A 165 lb N/A 12.50 in N/A 12 N/A 1.50 in
081500WNAN N/A 8 N/A 19.00 in N/A 3.63 in N/A 10.63 in N/A 8.38 in N/A 8.63 in N/A 11.50 in N/A Specified by purchaser N/A 275 lb N/A 15.50 in N/A 12 N/A 1.75 in
101500WNAN N/A 10 N/A 23.00 in N/A 4.25 in N/A 12.75 in N/A 10.00 in N/A 10.75 in N/A 14.50 in N/A Specified by purchaser N/A 455 lb N/A 19.00 in N/A 12 N/A 2.00 in
121500WNAN N/A 12 N/A 26.50 in N/A 4.88 in N/A 15.00 in N/A 11.13 in N/A 12.75 in N/A 17.75 in N/A Specified by purchaser N/A 690 lb N/A 22.50 in N/A 16 N/A 2.13 in
141500WNAN N/A 14 N/A 29.50 in N/A 5.25 in N/A 16.25 in N/A 11.75 in N/A 14.00 in N/A 19.50 in N/A Specified by purchaser N/A 940 lb N/A 25.00 in N/A 16 N/A 2.38 in
161500WNAN N/A 16 N/A 32.50 in N/A 5.75 in N/A 18.50 in N/A 12.25 in N/A 16.00 in N/A 21.75 in N/A Specified by purchaser N/A 1250 lb N/A 27.75 in N/A 16 N/A 2.63 in
181500WNAN N/A 18 N/A 36.00 in N/A 6.38 in N/A 21.00 in N/A 12.88 in N/A 18.00 in N/A 23.50 in N/A Specified by purchaser N/A 1625 lb N/A 30.50 in N/A 16 N/A 2.88 in
201500WNAN N/A 20 N/A 38.75 in N/A 7.00 in N/A 23.00 in N/A 14.00 in N/A 20.00 in N/A 25.25 in N/A Specified by purchaser N/A 2050 lb N/A 32.75 in N/A 16 N/A 3.13 in
241500WNAN N/A 24 N/A 46.00 in N/A 8.00 in N/A 27.25 in N/A 16.00 in N/A 24.00 in N/A 30.00 in N/A Specified by purchaser N/A 3325 lb N/A 39.00 in N/A 16 N/A 3.63 in
Unit of Measure
1