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ANSI B16.5 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

0H300LJAN N/A 1/2 N/A 3.75 in N/A 0.56 in N/A 0.88 in N/A 1.50 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
3Q300LJAN N/A 3/4 N/A 4.63 in N/A 0.63 in N/A 1.00 in N/A 1.88 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
01300LJAN N/A 1 N/A 4.88 in N/A 0.69 in N/A 1.06 in N/A 2.13 in N/A 0.13 in N/A 1.38 in N/A 3 lb N/A 3.50 in N/A 4 N/A 0.75 in
1Q300LJAN N/A 1 1/4 N/A 5.25 in N/A 0.75 in N/A 1.06 in N/A 2.50 in N/A 0.19 in N/A 1.72 in N/A 4 lb N/A 3.88 in N/A 4 N/A 0.75 in
1H300LJAN N/A 1 1/2 N/A 6.13 in N/A 0.81 in N/A 1.19 in N/A 2.75 in N/A 0.25 in N/A 1.97 in N/A 6 lb N/A 4.50 in N/A 4 N/A 0.88 in
02300LJAN N/A 2 N/A 6.50 in N/A 0.88 in N/A 1.31 in N/A 3.31 in N/A 0.31 in N/A 2.46 in N/A 7 lb N/A 5.00 in N/A 8 N/A 0.75 in
2H300LJAN N/A 2 1/2 N/A 7.50 in N/A 1.00 in N/A 1.50 in N/A 3.94 in N/A 0.31 in N/A 2.97 in N/A 10 lb N/A 5.88 in N/A 8 N/A 0.88 in
03300LJAN N/A 3 N/A 8.25 in N/A 1.13 in N/A 1.69 in N/A 4.63 in N/A 0.38 in N/A 3.60 in N/A 13 lb N/A 6.63 in N/A 8 N/A 0.88 in
3H300LJAN N/A 3 1/2 N/A 9.00 in N/A 1.19 in N/A 1.75 in N/A 5.25 in N/A 0.38 in N/A 4.10 in N/A 17 lb N/A 7.25 in N/A 8 N/A 0.88 in
04300LJAN N/A 4 N/A 10.00 in N/A 1.25 in N/A 1.88 in N/A 5.75 in N/A 0.44 in N/A 4.60 in N/A 22 lb N/A 7.88 in N/A 8 N/A 0.88 in
05300LJAN N/A 5 N/A 11.00 in N/A 1.38 in N/A 2.00 in N/A 7.00 in N/A 0.44 in N/A 5.69 in N/A 28 lb N/A 9.25 in N/A 8 N/A 0.88 in
06300LJAN N/A 6 N/A 12.50 in N/A 1.44 in N/A 2.06 in N/A 8.13 in N/A 0.50 in N/A 6.75 in N/A 39 lb N/A 10.63 in N/A 12 N/A 0.88 in
08300LJAN N/A 8 N/A 15.00 in N/A 1.63 in N/A 2.44 in N/A 10.25 in N/A 0.50 in N/A 8.75 in N/A 58 lb N/A 13.00 in N/A 12 N/A 1.00 in
10300LJAN N/A 10 N/A 17.50 in N/A 1.88 in N/A 3.75 in N/A 12.63 in N/A 0.50 in N/A 10.92 in N/A 91 lb N/A 15.25 in N/A 16 N/A 1.13 in
12300LJAN N/A 12 N/A 20.50 in N/A 2.00 in N/A 4.00 in N/A 14.75 in N/A 0.50 in N/A 12.92 in N/A 140 lb N/A 17.75 in N/A 16 N/A 1.25 in
14300LJAN N/A 14 N/A 23.00 in N/A 2.13 in N/A 4.38 in N/A 16.75 in N/A 0.50 in N/A 14.18 in N/A 190 lb N/A 20.25 in N/A 20 N/A 1.25 in
16300LJAN N/A 16 N/A 25.50 in N/A 2.25 in N/A 4.75 in N/A 19.00 in N/A 0.50 in N/A 16.19 in N/A 250 lb N/A 22.50 in N/A 20 N/A 1.38 in
18300LJAN N/A 18 N/A 28.00 in N/A 2.38 in N/A 5.13 in N/A 21.00 in N/A 0.50 in N/A 18.20 in N/A 295 lb N/A 24.75 in N/A 24 N/A 1.38 in
20300LJAN N/A 20 N/A 30.50 in N/A 2.50 in N/A 5.50 in N/A 23.13 in N/A 0.50 in N/A 20.25 in N/A 370 lb N/A 27.00 in N/A 24 N/A 1.38 in
22300LJAN N/A 22 N/A 33.00 in N/A 2.63 in N/A 5.75 in N/A 25.25 in N/A 0.50 in N/A 22.25 in N/A 435 lb N/A 29.25 in N/A 24 N/A 1.63 in
24300LJAN N/A 24 N/A 36.00 in N/A 2.75 in N/A 6.00 in N/A 27.63 in N/A 0.50 in N/A 24.25 in N/A 550 lb N/A 32.00 in N/A 24 N/A 1.63 in
Unit of Measure
1