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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.
  • Standard Bore will be furnished unless otherwise specified.

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ANSI B16.5 Class 400 Lap Joint Flange
Unit of Measure
1 

Item #

Nominal Pipe Size

Outside Diameter (O)

Thickness (T)

Length Thru Hub (Y)

Hub Diameter (X)

Radius (r)

Bore (B)

Approximate Weight

Bolt Circle (C)

Number of Holes

Diameter of Holes

0H400LJAN N/A 1/2 N/A 3.75 in N/A 0.56 in N/A 1.38 in N/A 1.19 in N/A 0.13 in N/A 0.90 in N/A 2 lb N/A 2.63 in N/A 4 N/A 0.63 in
3Q400LJAN N/A 3/4 N/A 4.63 in N/A 0.63 in N/A 1.69 in N/A 1.50 in N/A 0.13 in N/A 1.11 in N/A 3 lb N/A 3.25 in N/A 4 N/A 0.75 in
01400LJAN N/A 1 N/A 4.88 in N/A 0.69 in N/A 2.00 in N/A 1.94 in N/A 0.13 in N/A 1.38 in N/A 4 lb N/A 3.50 in N/A 4 N/A 0.75 in
1Q400LJAN N/A 1 1/4 N/A 5.25 in N/A 0.81 in N/A 2.50 in N/A 2.31 in N/A 0.19 in N/A 1.72 in N/A 5 lb N/A 3.88 in N/A 4 N/A 0.75 in
1H400LJAN N/A 1 1/2 N/A 6.13 in N/A 0.88 in N/A 2.88 in N/A 2.56 in N/A 0.25 in N/A 1.97 in N/A 7 lb N/A 4.50 in N/A 4 N/A 0.88 in
02400LJAN N/A 2 N/A 6.50 in N/A 1.00 in N/A 3.63 in N/A 3.06 in N/A 0.31 in N/A 2.46 in N/A 9 lb N/A 5.00 in N/A 8 N/A 0.75 in
2H400LJAN N/A 2 1/2 N/A 7.50 in N/A 1.13 in N/A 4.13 in N/A 3.56 in N/A 0.31 in N/A 2.97 in N/A 12 lb N/A 5.88 in N/A 8 N/A 0.88 in
03400LJAN N/A 3 N/A 8.25 in N/A 1.25 in N/A 5.00 in N/A 4.25 in N/A 0.38 in N/A 3.60 in N/A 15 lb N/A 6.63 in N/A 8 N/A 0.88 in
3H400LJAN N/A 3 1/2 N/A 9.00 in N/A 1.38 in N/A 5.50 in N/A 4.81 in N/A 0.38 in N/A 4.10 in N/A 20 lb N/A 7.25 in N/A 8 N/A 1.00 in
04400LJAN N/A 4 N/A 10.00 in N/A 1.38 in N/A 2.00 in N/A 5.75 in N/A 0.44 in N/A 4.60 in N/A 25 lb N/A 7.88 in N/A 8 N/A 1.00 in
05400LJAN N/A 5 N/A 11.00 in N/A 1.50 in N/A 2.13 in N/A 7.00 in N/A 0.44 in N/A 5.69 in N/A 29 lb N/A 9.25 in N/A 8 N/A 1.00 in
06400LJAN N/A 6 N/A 12.50 in N/A 1.63 in N/A 2.25 in N/A 8.13 in N/A 0.50 in N/A 6.75 in N/A 42 lb N/A 10.63 in N/A 12 N/A 1.00 in
08400LJAN N/A 8 N/A 15.00 in N/A 1.88 in N/A 2.69 in N/A 10.25 in N/A 0.50 in N/A 8.75 in N/A 64 lb N/A 13.00 in N/A 12 N/A 1.13 in
10400LJAN N/A 10 N/A 17.50 in N/A 2.13 in N/A 4.00 in N/A 12.63 in N/A 0.50 in N/A 10.92 in N/A 110 lb N/A 15.25 in N/A 16 N/A 1.25 in
12400LJAN N/A 12 N/A 20.50 in N/A 2.25 in N/A 4.25 in N/A 14.75 in N/A 0.50 in N/A 12.92 in N/A 150 lb N/A 17.75 in N/A 16 N/A 1.38 in
14400LJAN N/A 14 N/A 23.00 in N/A 2.38 in N/A 4.63 in N/A 16.75 in N/A 0.50 in N/A 14.18 in N/A 205 lb N/A 20.25 in N/A 20 N/A 1.38 in
16400LJAN N/A 16 N/A 25.50 in N/A 2.50 in N/A 5.00 in N/A 19.00 in N/A 0.50 in N/A 16.19 in N/A 260 lb N/A 22.50 in N/A 20 N/A 1.50 in
18400LJAN N/A 18 N/A 28.00 in N/A 2.63 in N/A 5.38 in N/A 21.00 in N/A 0.50 in N/A 18.20 in N/A 315 lb N/A 24.75 in N/A 24 N/A 1.50 in
20400LJAN N/A 20 N/A 30.50 in N/A 2.75 in N/A 5.75 in N/A 23.13 in N/A 0.50 in N/A 20.25 in N/A 385 lb N/A 27.00 in N/A 24 N/A 1.63 in
22400LJAN N/A 22 N/A 33.00 in N/A 2.88 in N/A 6.00 in N/A 25.25 in N/A 0.50 in N/A 22.25 in N/A 455 lb N/A 29.25 in N/A 24 N/A 1.75 in
24400LJAN N/A 24 N/A 36.00 in N/A 3.00 in N/A 6.25 in N/A 27.63 in N/A 0.50 in N/A 24.25 in N/A 570 lb N/A 32.00 in N/A 24 N/A 1.88 in
Unit of Measure
1