Bolt and Stud Bolt Dimensions for ANSI / ASME B16.5 Class 400 Flanges

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Bolt and Stud Bolt Dimensions for ANSI / ASME B16.5 Class 400 Flanges

Bolt & Stud Bolt Diameter and Length for ANSI / ASME B16.5 Class 400 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 1/2 3.00 2.75 3.00
3/4 5/8 3.50 3.25 3.50
1 5/8 3.50 3.25 3.50
1 1/4 5/8 3.75 3.50
3.75
1 1/2 3/4 4.25 4.00 4.25
2 5/8 4.25 4.00 4.25
2 1/2 3/4 4.75
4.50
4.75
3 3/4 5.00 4.75
5.00
3 1/2 7/8 5.50 5.25 5.50
4 7/8 5.50 5.25 5.50
5 7/8
5.75
5.25 5.75
6 7/8 6.00
5.75
6.00
8 1 6.75
6.50
6.75
10
1 1/8
7.50 7.25 7.50
12 1 1/4 8.00 7.75 8.00
14 1 1/4 8.25 8.00 8.25
16 1 3/8 8.75 8.50 8.75
18 1 3/8 9.00
8.75
9.00
20 1 1/2 9.50 9.25 9.75
24 1 3/4 10.50 10.25 11.00

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.

 

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