Dimensions Stud Bolts for RF-RTJ flanges ASME B16.5 – Class 400

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 75 75 4 5 7/8 145 145 8
3/4 5/8 90 90 4 6 7/8 150 150 12
1 5/8 90 90 4 8 1 170 170 12
1.1/4 5/8 95 95 4 10 1.1/8 190 190 16
1.1/2 3/4 110 110 4 12 1.1/4 205 205 16
2 5/8 110 110 8 14 1.1/4 210 210 20
2.1/2 3/4 120 120 8 16 1.3/8 220 220 20
3 3/4 125 125 8 18 1.3/8 230 230 24
3.1/2 7/8 140 140 8 20 1.1/2 240 250 24
4 7/8 140 140 8 24 1.3/4 265 280 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