Hex Bolts and Stud Bolt Dimensions for ASME B16.5 Class 1500 Flange.

ASME B16.5 Class 1500

Bolt and Stud Bolt Dimensions for ASME B16.5 Class 1500 Flanges

Nominal Pipe Size, NPS Diameter of Bolts, in. Length of Bolts, L
Raised Face 0.25 in. Male and Female/ Tongue and Groove Ring Joint
1/2 3/4 4.25 4.00 4.25
3/4 3/4 4.50 4.25 4.50
1 7/8 5.00 4.75 5.00
1 1/4 7/8 5.00 4.75 5.00
1 1/2 1 5.50 5.25 5.50
2 7/8 5.75 5.50 5.75
2 1/2 1 6.25 6.00 6.25
3 1 1/8 7.00 6.75 7.00
4 1 1/4 7.75 7.50 7.75
5 1 1/2 9.75 9.50 9.75
6 1 3/8 10.25 10.00 10.50
8 1 5/8 11.50 11.25 12.75
10 1 7/8 13.25 13.00 13.50
12 2 14.75 14.50 15.25
14 2 1/4 16.00 15.75 16.75
16 2 1/2 17.50 17.25 18.50
18 2 3/4 19.50 19.25 20.75
20 3 21.25 21.00 22.25
24 3 1/2 24.25 24.00 25.50
NOTES :
  • Dimension are in inches.
  • Length of stud bolts does not include the height of the points.
  • Bolt lengths not shown in table may be determined in accordance with Annex D.