Dimensions Stud Bolts for RF-RTJ flanges ASME B16.5 – Class 150

Class  150 | 300 | 400 | 600 | 900 | 1500 | 2500

NPS Diameter
bolts (in)
Length
RF
Length
RTJ
N°
of bolts
NPS Diameter
bolts (in)
Length
RF
Length
RTJ
N°
of bolts
1/2 1/2 55 4 5 3/4 95 110 8
3/4 1/2 65 4 6 3/4 100 115 8
1 1/2 65 75 4 8 3/4 110 120 8
1.1/4 1/2 70 85 4 10 7/8 115 125 12
1.1/2 1/2 70 85 4 12 7/8 120 135 12
2 5/8 85 95 4 14 1 135 145 12
2.1/2 5/8 90 100 4 16 1 135 145 16
3 5/8 90 100 4 18 1.1/8 145 160 16
3.1/2 5/8 90 100 8 20 1.1/8 160 170 20
4 5/8 90 100 8 24 1.1/4 170 185 20
NPS Diameter
bolts (in)
Length
RF
Length
RTJ
N°
of bolts
NPS Diameter
bolts (in)
Length
RF
Length
RTJ
N°
of bolts

General notes:

  • Dimensions are in millimeters unless otherwise indicated.
  • Length dimensional tolerances for all Stud Bolts:
    length to 12 inch tolerance = ± 1.6 mm
    length over 12 inch to 18 inch tolerance = ± 3.2 mm
    length over 18 inch tolerance = ± 6.4 mm
  • The length of the Stud Bolt does not include the height of the chamfers (points).
Measuring lengths of Stud Bolts and Hex bolts