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BS 10 - 1962 TABLE E

Flange size designation

(Nominal bore of pipe)

Apprx. Outside diameterof steel

pipe.

Diameter of flange O.D.

Bold circle diameter

P.C.D

No.

Of

Bolts

Diameter

of

Bolts

Thickness

Slip onFlange.

inches inches inches inches inches inches
1/2 27/32 3 3/4 2 5/8 4 1/2 1/4
3/4 1 1/16 4 2 7/8 4 1/2 1/4
1 1 11/32 4 1/2 3 1/4 4 1/2 9/32
1 1/4 1 11/16 4 3/4 3 7/16 4 1/2 5/16
1 1/2 1 29/32 5 1/4 3 7/8 4 1/2 11/32
2 2 3/8 6 4 1/2 4 5/8 3/8
2 1/2 3 6 1/2 5 4 5/8 13/32
3 3 1/2 7 1/4 5 3/4 4 5/8 7/16
3 1/2 4 8 6 1/2 8 5/8 15/32
4 4 1/2 8 1/2 7 8 5/8 1/2
5 5 1/2 10 8 1/4 8 5/8 9/16
6 6 5/8 11 9 1/4 8 3/4 11/16
7 7 5/8 12 10 1/4 8 3/4 3/4
8 8 5/8 13 1/4 11 1/2 8 3/4 3/4
10 10 3/4 16 14 12 3/4 7/8
12 12 3/4 18 16 12 7/8 1
14 14 20 3/4 18 1/2 12 7/8 1 1/8
16 16 22 3/4 20 1/2 12 7/8 1 1/4
18 18 25 1/4 23 16 7/8 1 3/8
20 20 27 3/4 25 1/4 16 7/8 1 1/2
22 22 30 27 1/2 16 1 1 3/4
24 24 32 1/2 29 3/4 16 1 1/8 1 7/8

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