asme-b-16-5-class-150

Bolt & Stud Bolt Diameter and Length for ASME B16.5 Class 300 Flanges

Nominal Pipe Size, NPSDiameter of Bolts, in.Length of Bolts, L
Stud BoltsMachine Bolts
2mm Raised FaceRing Joint2mm Raised Face
1/21/2657555
3/45/8759065
15/8759065
1 1/45/8859570
1 1/23/49010075
25/89010075
2 1/23/410011585
33/411012090
3 1/23/411012595
43/411512595
53/4120135110
63/4120140110
87/8140150120
101160170140
121 1/8170185145
141 1/8180190160
161 1/4190205165
181 1/4195210170
201 1/4205220185
241 1/2230255205

Notes:

  • Dimension of Table 7 are in Millimeters, except for diameters of bolts and bolts holes, which are in inch units.
  • 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.