Dimensions for Continuous Thread Studs

Continuous thread stud is a stud that is threaded over its complete length.Table contains the dimensions for continuous thread studs according to ASME B18.31.2.

Dimensions of Continuous Thread Studs

Designation: Continuous thread stud, ASME B18.31.2, 1⁄2-13 x 4

Diameter,
D		 Diameter,
D		 Threads Per Inch UNC
Threads		 UNF
Threads		 8UN
Threads
UNC UNF 8UN Min. Max. Min. Max. Min. Max.
1/4 0.2500 20 28 ... 0.050 0.100 0.036 0.071 ... ...
5/16 0.3125 18 24 ... 0.056 0.111 0.042 0.083 ... ...
3/8 0.3750 16 24 ... 0.063 0.125 0.042 0.083 ... ...
7/16 0.4375 14 20 ... 0.072 0.143 0.050 0.100 ... ...
1/2 0.5000 13 20 ... 0.077 0.154 0.050 0.100 ... ...
5/8 0.6250 11 18 ... 0.091 0.182 0.056 0.111 ... ...
3/4 0.7500 10 16 ... 0.100 0.200 0.063 0.125 ... ...
7/8 0.8750 9 14 ... 0.111 0.222 0.072 0.143 ... ...
1 1.0000 8 12 ... 0.125 0.250 0.084 0.167 ... ...
  1 1/8 1.1250 7 12 8 0.143 0.286 0.084 0.167 0.125 0.250
1 1/4 1.2500 7 12 8 0.143 0.286 0.084 0.167 0.125 0.250
1 3/8 1.3750 6 12 8 0.167 0.333 0.084 0.167 0.125 0.250
1 1/2 1.5000 6 12 8 0.167 0.333 0.084 0.167 0.125 0.250

The overall length of continuous thread shall be in one-quarter inch increments for lengths through 10 in. For stud lengths greater than 10 in., lengths shall be in whole inches and one-half inch increments

Supplements:

Reference:

  • ASME B18.31.2-2014 — Continuous Thread Stud, Double-End Stud, and Flange Bolting Stud (Stud Bolt) (Inch Series)