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

Stud bolt with two nuts

OTHER PRESSURE CLASSES

150
300
400
600
900
NPS DIA
bolts (in)
Length
RF
Length
RTJ
Number
of bolts
1/2 1/2 65 75 4
3/4 5/8 75 90 4
1 5/8 75 90 4
1.1/4 5/8 85 95 4
1.1/2 3/4 90 100 4
2 5/8 90 100 8
2.1/2 3/4 100 115 8
3 3/4 110 120 8
3.1/2 3/4 110 125 8
4 3/4 115 125 8
5 3/4 120 135 8
6 3/4 120 140 12
8 7/8 140 150 12
10 1 160 170 16
12 1.1/8 170 185 16
14 1.1/8 180 190 20
16 1.1/4 190 205 20
18 1.1/4 195 210 24
20 1.1/4 205 220 24
24 1.1/2 230 255 24

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).

Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points). S = free threads equals 1/3 time bolt dia

Measuring lengths of Stud Bolts

 

Hex bolts are measured from under the head to the top of de bolt


Measuring lengths of Hex bolts


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