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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

0H1500LJAN N/A 1/2 N/A 4.75 in N/A 0.88 in N/A 1.25 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
3Q1500LJAN N/A 3/4 N/A 5.13 in N/A 1.00 in N/A 1.38 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
011500LJAN N/A 1 N/A 5.88 in N/A 1.13 in N/A 1.63 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
1Q1500LJAN N/A 1 1/4 N/A 6.25 in N/A 1.13 in N/A 1.63 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
1H1500LJAN N/A 1 1/2 N/A 7.00 in N/A 1.25 in N/A 1.75 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
021500LJAN N/A 2 N/A 8.50 in N/A 1.50 in N/A 2.25 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
2H1500LJAN N/A 2 1/2 N/A 9.63 in N/A 1.63 in N/A 2.50 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
031500LJAN N/A 3 N/A 10.50 in N/A 1.88 in N/A 2.88 in N/A 5.25 in N/A 0.38 in N/A 3.60 in N/A 47 lb N/A 8.00 in N/A 8 N/A 1.25 in
041500LJAN N/A 4 N/A 12.25 in N/A 2.13 in N/A 3.56 in N/A 6.38 in N/A 0.38 in N/A 4.60 in N/A 75 lb N/A 9.50 in N/A 8 N/A 1.38 in
051500LJAN N/A 5 N/A 14.75 in N/A 2.88 in N/A 4.13 in N/A 7.75 in N/A 0.44 in N/A 5.69 in N/A 140 lb N/A 11.50 in N/A 8 N/A 1.63 in
061500LJAN N/A 6 N/A 15.50 in N/A 3.25 in N/A 4.69 in N/A 9.00 in N/A 0.44 in N/A 6.75 in N/A 170 lb N/A 12.50 in N/A 12 N/A 1.50 in
081500LJAN N/A 8 N/A 19.00 in N/A 3.63 in N/A 5.63 in N/A 11.50 in N/A 0.50 in N/A 8.75 in N/A 285 lb N/A 15.50 in N/A 12 N/A 1.75 in
101500LJAN N/A 10 N/A 23.00 in N/A 4.25 in N/A 7.00 in N/A 14.50 in N/A 0.50 in N/A 10.92 in N/A 485 lb N/A 19.00 in N/A 12 N/A 2.00 in
121500LJAN N/A 12 N/A 26.50 in N/A 4.88 in N/A 8.63 in N/A 17.75 in N/A 0.50 in N/A 12.92 in N/A 630 lb N/A 22.50 in N/A 16 N/A 2.13 in
141500LJAN N/A 14 N/A 29.50 in N/A 5.25 in N/A 9.50 in N/A 19.50 in N/A 0.50 in N/A 14.18 in N/A 890 lb N/A 25.00 in N/A 16 N/A 2.38 in
161500LJAN N/A 16 N/A 32.50 in N/A 5.75 in N/A 10.25 in N/A 21.75 in N/A 0.50 in N/A 16.19 in N/A 1150 lb N/A 27.75 in N/A 16 N/A 2.63 in
181500LJAN N/A 18 N/A 36.00 in N/A 6.38 in N/A 10.88 in N/A 23.50 in N/A 0.50 in N/A 18.20 in N/A 1475 lb N/A 30.50 in N/A 16 N/A 2.88 in
201500LJAN N/A 20 N/A 38.75 in N/A 7.00 in N/A 11.50 in N/A 25.25 in N/A 0.50 in N/A 20.25 in N/A 1775 lb N/A 32.75 in N/A 16 N/A 3.13 in
241500LJAN N/A 24 N/A 46.00 in N/A 8.00 in N/A 13.00 in N/A 30.00 in N/A 0.50 in N/A 24.25 in N/A 2825 lb N/A 39.00 in N/A 16 N/A 3.63 in
Unit of Measure
1