Other Torque Specifications
SAE Grade 8 Steel Set Screws
Thread Size
Thread Size
Square Head
1/4 - 20 UNC
140 20 in-lb
5/16 - 18 UNC
215 35 in-lb
3/8 - 16 UNC
35 10 ft-lb
1/2 - 13 UNC
75 15 ft-lb
Thread Cutting Screws
(Zinc Plated Steel)
Type 1, Type 23, or Type F
Thread Size
No. 6 - 32 UNC
No. 8 - 32 UNC
No. 10 - 24 UNC
1/4 - 20 UNC
5/16 - 18 UNC
3/8 - 16 UNC
Conversion Factors
in-lb X 11.2985 = N-cm
ft-lb X 1.3558 = N-m
Product Records and Maintenance
Recommended Torque
Hex Socket
73 12 in-lb
145 20 in-lb
18 3 ft-lb
50 10 ft-lb
Baseline Torque*
20 5 in-lb
30 5 in-lb
38 7 in-lb
85 15 in-lb
110 20 in-lb
200 100 in-lb
Wheel Bolts and Lug Nuts
Thread Size
7/16 - 20 UNF
Grade 5
1/2 - 20 UNF
Grade 5
M12 X 1.25
Class 8.8
M12 X 1.5
Class 8.8
** For steel wheels and non-lubricated fasteners.
Thread Cutting Screws
Thread
Threads per Inch
Size
Size
Type A
No. 6
18
No. 8
15
No. 10
12
No. 12
11
* Hole size, material strength, material thickness & finish
must be considered when determining specific torque
values. All torque values are based on non-lubricated
fasteners.
N-cm X 0.08851 = in-lb
N-m X 0.7376 = ft-lb
Page 2 - 6
Recommended Torque**
65 10 ft-lb
88 14 N-m
80 10 ft-lb
108 14 N-m
80 10 ft-lb
108 14 N-m
80 10 ft-lb
108 14 N-m
(Zinc Plated Steel)
Baseline Torque*
Baseline Torque*
Type B
20
20 5 in-lb
18
30 5 in-lb
16
38 7 in-lb
14
85 15 in-lb
Reelmaster 5200-D/5400-D