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  • ANSI B16.5 Class 400 Weld Neck Flange
  • 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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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

N/A 1/2 N/A 3.75 in N/A 0.56 in N/A 1.38 in N/A 2.06 in N/A 0.84 in N/A 1.50 in N/A Specified by purchaser N/A 2 lb N/A 2.63 in N/A 4 N/A 0.63 in
N/A 3/4 N/A 4.63 in N/A 0.63 in N/A 1.69 in N/A 2.25 in N/A 1.05 in N/A 1.88 in N/A Specified by purchaser N/A 4 lb N/A 3.25 in N/A 4 N/A 0.75 in
N/A 1 N/A 4.88 in N/A 0.69 in N/A 2.00 in N/A 2.44 in N/A 1.32 in N/A 2.13 in N/A Specified by purchaser N/A 4 lb N/A 3.50 in N/A 4 N/A 0.75 in
N/A 1 1/4 N/A 5.25 in N/A 0.81 in N/A 2.50 in N/A 2.63 in N/A 1.66 in N/A 2.50 in N/A Specified by purchaser N/A 6 lb N/A 3.88 in N/A 4 N/A 0.75 in
N/A 1 1/2 N/A 6.13 in N/A 0.88 in N/A 2.88 in N/A 2.75 in N/A 1.90 in N/A 2.75 in N/A Specified by purchaser N/A 8 lb N/A 4.50 in N/A 4 N/A 0.88 in
N/A 2 N/A 6.50 in N/A 1.00 in N/A 3.63 in N/A 2.88 in N/A 2.38 in N/A 3.31 in N/A Specified by purchaser N/A 12 lb N/A 5.00 in N/A 8 N/A 0.75 in
N/A 2 1/2 N/A 7.50 in N/A 1.13 in N/A 4.13 in N/A 3.13 in N/A 2.88 in N/A 3.94 in N/A Specified by purchaser N/A 18 lb N/A 5.88 in N/A 8 N/A 0.88 in
N/A 3 N/A 8.25 in N/A 1.25 in N/A 5.00 in N/A 3.25 in N/A 3.50 in N/A 4.63 in N/A Specified by purchaser N/A 23 lb N/A 6.63 in N/A 8 N/A 0.88 in
N/A 3 1/2 N/A 9.00 in N/A 1.38 in N/A 5.50 in N/A 3.38 in N/A 4.00 in N/A 5.25 in N/A Specified by purchaser N/A 26 lb N/A 7.25 in N/A 8 N/A 1.00 in
N/A 4 N/A 10.75 in N/A 1.50 in N/A 6.19 in N/A 4.00 in N/A 4.50 in N/A 6.00 in N/A Specified by purchaser N/A 42 lb N/A 8.50 in N/A 8 N/A 1.00 in
N/A 5 N/A 13.00 in N/A 1.75 in N/A 7.31 in N/A 4.50 in N/A 5.56 in N/A 7.44 in N/A Specified by purchaser N/A 68 lb N/A 10.50 in N/A 8 N/A 1.13 in
N/A 6 N/A 14.00 in N/A 1.88 in N/A 8.50 in N/A 4.63 in N/A 6.63 in N/A 8.75 in N/A Specified by purchaser N/A 81 lb N/A 11.50 in N/A 12 N/A 1.13 in
N/A 8 N/A 16.50 in N/A 2.19 in N/A 10.63 in N/A 5.25 in N/A 8.63 in N/A 10.75 in N/A Specified by purchaser N/A 120 lb N/A 13.75 in N/A 12 N/A 1.25 in
N/A 10 N/A 20.00 in N/A 2.50 in N/A 12.75 in N/A 6.00 in N/A 10.75 in N/A 13.50 in N/A Specified by purchaser N/A 190 lb N/A 17.00 in N/A 16 N/A 1.38 in
N/A 12 N/A 22.00 in N/A 2.63 in N/A 15.00 in N/A 6.13 in N/A 12.75 in N/A 15.75 in N/A Specified by purchaser N/A 225 lb N/A 19.25 in N/A 20 N/A 1.38 in
N/A 14 N/A 23.75 in N/A 2.75 in N/A 16.25 in N/A 6.50 in N/A 14.00 in N/A 17.00 in N/A Specified by purchaser N/A 280 lb N/A 20.75 in N/A 20 N/A 1.50 in
N/A 16 N/A 27.00 in N/A 3.00 in N/A 18.50 in N/A 7.00 in N/A 16.00 in N/A 19.50 in N/A Specified by purchaser N/A 390 lb N/A 23.75 in N/A 20 N/A 1.63 in
N/A 18 N/A 29.25 in N/A 3.25 in N/A 21.00 in N/A 7.25 in N/A 18.00 in N/A 21.50 in N/A Specified by purchaser N/A 475 lb N/A 25.75 in N/A 20 N/A 1.75 in
N/A 20 N/A 32.00 in N/A 3.50 in N/A 23.00 in N/A 7.50 in N/A 20.00 in N/A 24.00 in N/A Specified by purchaser N/A 590 lb N/A 28.50 in N/A 24 N/A 1.75 in
N/A 22 N/A 34.25 in N/A 3.75 in N/A 25.25 in N/A 7.75 in N/A 22.00 in N/A 26.25 in N/A Specified by purchaser N/A 720 lb N/A 30.63 in N/A 24 N/A 1.88 in
N/A 24 N/A 37.00 in N/A 4.00 in N/A 27.25 in N/A 8.00 in N/A 24.00 in N/A 28.25 in N/A Specified by purchaser N/A 830 lb N/A 33.00 in N/A 24 N/A 2.00 in
1 - 21 of 21 | Results Per Page | View | Unit of Measure
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