Dimensions Stud Bolts for RF-RTJ flanges ASME B16.5 – Class 300

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 65 75 4 5 3/4 120 135 8
3/4 5/8 75 90 4 6 3/4 120 140 12
1 5/8 75 90 4 8 7/8 140 150 12
1.1/4 5/8 85 95 4 10 1 160 170 16
1.1/2 3/4 90 100 4 12 1.1/8 170 185 16
2 5/8 90 100 8 14 1.1/8 180 190 20
2.1/2 3/4 100 115 8 16 1.1/4 190 205 20
3 3/4 110 120 8 18 1.1/4 195 210 24
3.1/2 3/4 110 125 8 20 1.1/4 205 220 24
4 3/4 115 125 8 24 1.1/2 230 255 24
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