ANSI/ASME B16.5 Class 600 Flange Bolting Dimensions

ASME B16.5 Class 600

Templates for Drilling Class 600 Flanges

Templates for Drilling Class 600 Flanges
Nominal Pipe Size, NPS Outside Diameter of Flange, O Drilling Length of Bolts, L
Diameter of Bolt Circle, W Diameter of Bolts Holes, in. Number of Bolts Diameter of Bolts, in. Raised Face 0.25 in. Male and Female/ Tongue and Groove Ring Joint
1/2 3.75 2.62 5/8 4 1/2 3.00 2.75 3.00
3/4 4.62 3.25 3/4 4 5/8 3.50 3.25 3.50
1 4.88 3.50 3/4 4 5/8 3.50 3.25 3.50
1 1/4 5.25 3.88 3/4 4 5/8 3.75 3.50 3.75
1 1/2 6.12 4.50 7/8 4 3/4 4.25 4.00 4.25
2 6.50 5.00 3/4 8 5/8 4.25 4.00 4.25
2 1/2 7.50 5.88 7/8 8 3/4 4.75 4.50 4.75
3 8.25 6.62 7/8 8 3/4 5.00 4.75 5.00
3 1/2 9.00 7.25 1 8 7/8 5.50 5.25 5.50
4 10.75 8.50 1 8 7/8 5.75 5.50 5.75
5 13.00 10.50 1 1/8 8 1 6.5 6.25 6.50
6 14.00 11.50 1 1/8 12 1 6.75 6.50 6.75
8 16.50 13.75 1 1/4 12 1 1/8 7.50 7.25 7.75
10 20.00 17.00 1 3/8 16 1 1/4 8.50 8.25 8.50
12 22.00 19.25 1 3/8 20 1 1/4 8.75 8.50 8.75
14 23.75 20.75 1 1/2 20 1 3/8 9.25 9.00 9.25
16 27.00 23.75 1 5/8 20 1 1/2 10.00 9.75 10.00
18 29.25 25.75 1 3/4 20 1 5/8 10.75 10.50 10.75
20 32.00 28.50 1 3/4 24 1 5/8 11.25 11.00 11.50
24 37.00 33.00 2 24 1 7/8 13.00 12.75 13.25
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.