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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

0H900LJAN N/A 1/2 N/A 4.75 in N/A 0.88 in N/A 1.38 in N/A 1.50 in N/A 0.13 in N/A 0.90 in N/A 4 lb N/A 3.25 in N/A 4 N/A 0.88 in
3Q900LJAN N/A 3/4 N/A 5.13 in N/A 1.00 in N/A 1.69 in N/A 1.75 in N/A 0.13 in N/A 1.11 in N/A 5 lb N/A 3.50 in N/A 4 N/A 0.88 in
01900LJAN N/A 1 N/A 5.88 in N/A 1.13 in N/A 2.00 in N/A 2.06 in N/A 0.13 in N/A 1.38 in N/A 8 lb N/A 4.00 in N/A 4 N/A 1.00 in
1Q900LJAN N/A 1 1/4 N/A 6.25 in N/A 1.13 in N/A 2.50 in N/A 2.50 in N/A 0.19 in N/A 1.72 in N/A 9 lb N/A 4.38 in N/A 4 N/A 1.00 in
1H900LJAN N/A 1 1/2 N/A 7.00 in N/A 1.25 in N/A 2.88 in N/A 2.75 in N/A 0.25 in N/A 1.97 in N/A 12 lb N/A 4.88 in N/A 4 N/A 1.13 in
02900LJAN N/A 2 N/A 8.50 in N/A 1.50 in N/A 3.63 in N/A 4.13 in N/A 0.31 in N/A 2.46 in N/A 25 lb N/A 6.50 in N/A 8 N/A 1.00 in
2H900LJAN N/A 2 1/2 N/A 9.63 in N/A 1.63 in N/A 4.13 in N/A 4.88 in N/A 0.31 in N/A 2.97 in N/A 35 lb N/A 7.50 in N/A 8 N/A 1.13 in
03900LJAN N/A 3 N/A 9.50 in N/A 1.50 in N/A 2.13 in N/A 5.25 in N/A 0.38 in N/A 3.60 in N/A 25 lb N/A 7.50 in N/A 8 N/A 1.00 in
04900LJAN N/A 4 N/A 11.50 in N/A 1.75 in N/A 2.75 in N/A 6.25 in N/A 0.44 in N/A 4.60 in N/A 51 lb N/A 9.25 in N/A 8 N/A 1.25 in
05900LJAN N/A 5 N/A 13.75 in N/A 2.00 in N/A 3.13 in N/A 7.50 in N/A 0.50 in N/A 5.69 in N/A 81 lb N/A 11.00 in N/A 8 N/A 1.38 in
06900LJAN N/A 6 N/A 15.00 in N/A 2.19 in N/A 3.38 in N/A 9.25 in N/A 0.50 in N/A 6.75 in N/A 105 lb N/A 12.50 in N/A 12 N/A 1.25 in
08900LJAN N/A 8 N/A 18.50 in N/A 2.50 in N/A 4.50 in N/A 11.75 in N/A 0.50 in N/A 8.75 in N/A 190 lb N/A 15.50 in N/A 12 N/A 1.50 in
10900LJAN N/A 10 N/A 21.50 in N/A 2.75 in N/A 5.00 in N/A 14.50 in N/A 0.50 in N/A 10.92 in N/A 275 lb N/A 18.50 in N/A 16 N/A 1.50 in
12900LJAN N/A 12 N/A 24.00 in N/A 3.13 in N/A 5.63 in N/A 16.50 in N/A 0.50 in N/A 12.92 in N/A 370 lb N/A 21.00 in N/A 20 N/A 1.50 in
14900LJAN N/A 14 N/A 25.25 in N/A 3.38 in N/A 6.13 in N/A 17.75 in N/A 0.50 in N/A 14.18 in N/A 415 lb N/A 22.00 in N/A 20 N/A 1.63 in
16900LJAN N/A 16 N/A 27.75 in N/A 3.50 in N/A 6.50 in N/A 20.00 in N/A 0.50 in N/A 16.19 in N/A 465 lb N/A 24.25 in N/A 20 N/A 1.75 in
18900LJAN N/A 18 N/A 31.00 in N/A 4.00 in N/A 7.50 in N/A 22.25 in N/A 0.50 in N/A 18.20 in N/A 650 lb N/A 27.00 in N/A 20 N/A 2.00 in
20900LJAN N/A 20 N/A 33.75 in N/A 4.25 in N/A 8.25 in N/A 24.50 in N/A 0.50 in N/A 20.25 in N/A 810 lb N/A 29.50 in N/A 20 N/A 2.13 in
24900LJAN N/A 24 N/A 41.00 in N/A 5.50 in N/A 10.50 in N/A 29.50 in N/A 0.50 in N/A 24.25 in N/A 1550 lb N/A 35.50 in N/A 20 N/A 2.63 in
Unit of Measure
1