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4-3. Performing AWS Torque Test
804 160-A
Studs that are torqued to destruc-
tion without failure in the weld are
considered qualified.
1
Stud
2
Washer
3
Weld Area
4
Member
5
Sleeve
6
Steel Nut
1
2
3
4
5
6
Dimensions are appropriate to the size of the stud. Threads of the stud shall be
clean and free of lubricant other than for the residue of cutting oil.
NOTE
REQUIRED TORQUE FOR TESTING THREADED STUDS
Normal Diameter Of Studs,
Inches (mm)
Threads Per Inch And Series Designated
Testing Torque Foot-Pounds
1/4 in (6.3 mm)
1/4 in (6.3 mm)
28 UNF
20 UNC
5.0
4.2
5/16 in (8 mm)
5/16 in (8 mm)
24 UNF
18 UNC
9.5
8.6
3/8 in (9.5 mm)
3/8 in (9.5 mm)
24 UNF
16 UNC
17.
15.
7/16 in (11.1 mm)
7/16 in (11.1 mm)
20 UNF
14 UNC
27.
24.
1/2 in (13 mm)
1/2 in (13 mm)
20 UNF
13 UNC
42.
37.
9/16 in (14.2 mm)
9/16 in (14.2 mm)
18 UNF
12 UNC
60.
54.
5/8 in (15.9 mm)
5/8 in (15.9 mm)
18 UNF
11 UNC
84.
74.
3/4 in (19 mm)
3/4 in (19 mm)
16 UNF
10 UNC
147.
132.
7/8 in (22.2 mm)
7/8 in (22.2 mm)
14 UNF
9 UNC
234.
212.
1 in (25.4 mm)
1 in (25.4 mm)
12 UNF
8 UNC
348.
318.
