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

Print PDF
ANSI B16.5 Class 400 Threaded Flanges
Unit of Measure
1 

Item #

Nominal Pipe Size

Outside Diameter (O)

Thickness (T)

Raised Face Diameter (R)

Length Thru Hub (Y)

Hub Diameter (X)

Approximate Weight

Bolt Circle (C)

Number of Holes

Diameter of Holes

0H600THAN N/A 1/2 N/A 3.75 in N/A 0.56 in N/A 1.38 in N/A 0.88 in N/A 1.50 in N/A 2 lb N/A 2.63 in N/A 4 N/A 0.63 in
3Q600THAN N/A 3/4 N/A 4.63 in N/A 0.63 in N/A 1.69 in N/A 1.00 in N/A 1.88 in N/A 3 lb N/A 3.25 in N/A 4 N/A 0.75 in
01600THAN N/A 1 N/A 4.88 in N/A 0.69 in N/A 2.00 in N/A 1.06 in N/A 2.13 in N/A 4 lb N/A 3.50 in N/A 4 N/A 0.75 in
1Q600THAN N/A 1 1/4 N/A 5.25 in N/A 0.81 in N/A 2.50 in N/A 1.13 in N/A 2.50 in N/A 5 lb N/A 3.88 in N/A 4 N/A 0.75 in
1H600THAN N/A 1 1/2 N/A 6.13 in N/A 0.88 in N/A 2.88 in N/A 1.25 in N/A 2.75 in N/A 7 lb N/A 4.50 in N/A 4 N/A 0.88 in
02600THAN N/A 2 N/A 6.50 in N/A 1.00 in N/A 3.63 in N/A 1.44 in N/A 3.31 in N/A 9 lb N/A 5.00 in N/A 8 N/A 0.75 in
2H600THAN N/A 2 1/2 N/A 7.50 in N/A 1.13 in N/A 4.13 in N/A 1.63 in N/A 3.94 in N/A 13 lb N/A 5.88 in N/A 8 N/A 0.88 in
03600THAN N/A 3 N/A 8.25 in N/A 1.25 in N/A 5.00 in N/A 1.81 in N/A 4.63 in N/A 16 lb N/A 6.63 in N/A 8 N/A 0.88 in
3H600THAN N/A 3 1/2 N/A 9.00 in N/A 1.38 in N/A 5.50 in N/A 1.94 in N/A 5.25 in N/A 21 lb N/A 7.25 in N/A 8 N/A 1.00 in
04600THAN N/A 4 N/A 10.75 in N/A 1.50 in N/A 6.19 in N/A 2.13 in N/A 6.00 in N/A 37 lb N/A 8.50 in N/A 8 N/A 1.00 in
05600THAN N/A 5 N/A 13.00 in N/A 1.75 in N/A 7.31 in N/A 2.38 in N/A 7.44 in N/A 63 lb N/A 10.50 in N/A 8 N/A 1.13 in
06600THAN N/A 6 N/A 14.00 in N/A 1.88 in N/A 8.50 in N/A 2.63 in N/A 8.75 in N/A 80 lb N/A 11.50 in N/A 12 N/A 1.13 in
08600THAN N/A 8 N/A 16.50 in N/A 2.19 in N/A 10.63 in N/A 3.00 in N/A 10.75 in N/A 115 lb N/A 13.75 in N/A 12 N/A 1.25 in
10600THAN N/A 10 N/A 20.00 in N/A 2.50 in N/A 12.75 in N/A 3.38 in N/A 13.50 in N/A 170 lb N/A 17.00 in N/A 16 N/A 1.38 in
12600THAN N/A 12 N/A 22.00 in N/A 2.63 in N/A 15.00 in N/A 3.63 in N/A 15.75 in N/A 200 lb N/A 19.25 in N/A 20 N/A 1.38 in
14600THAN N/A 14 N/A 23.75 in N/A 2.75 in N/A 16.25 in N/A 3.69 in N/A 17.00 in N/A 230 lb N/A 20.75 in N/A 20 N/A 1.50 in
16600THAN N/A 16 N/A 27.00 in N/A 3.00 in N/A 18.50 in N/A 4.19 in N/A 19.50 in N/A 330 lb N/A 23.75 in N/A 20 N/A 1.63 in
18600THAN N/A 18 N/A 29.25 in N/A 3.25 in N/A 21.00 in N/A 4.63 in N/A 21.50 in N/A 400 lb N/A 25.75 in N/A 20 N/A 1.75 in
20600THAN N/A 20 N/A 32.00 in N/A 3.50 in N/A 23.00 in N/A 5.00 in N/A 24.00 in N/A 510 lb N/A 28.50 in N/A 24 N/A 1.75 in
22600THAN N/A 22 N/A 34.25 in N/A 3.75 in N/A 25.25 in N/A 5.25 in N/A 26.25 in N/A 590 lb N/A 30.63 in N/A 24 N/A 1.88 in
24600THAN N/A 24 N/A 37.00 in N/A 4.00 in N/A 27.25 in N/A 5.50 in N/A 28.25 in N/A 730 lb N/A 33.00 in N/A 24 N/A 2.00 in
Unit of Measure
1