Other Torque Specifications; Conversion Factors - Toro Reelmaster 3100-D Service Manual

Other Torque Specifications

Conversion Factors

in-lb X 11.2985 = N∙cm
ft-lb X 1.3558 = N∙m
Specifications and Maintenance: Torque Specifications
Thread Size
1/4 - 20 UNC
5/16 - 18 UNC
3/8 - 16 UNC
1/2 - 13 UNC
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
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 Size
No. 6
No. 8
No. 10
No. 12
**The hole size, material strength, material thickness, and material finish must be
considered when determining the specified torque values. All the torque values
are based on the non-lubricated fasteners.
SAE Grade 8 Steel Set Screws
Recommended Torque
Square Head
140 ± 20 in-lb
215 ± 35 in-lb
35 ± 10 ft-lb
75 ± 15 ft-lb
Thread Cutting Screws
(Zinc Plated Steel)
Type 1, Type 23 or Type F
Wheel Bolts and Lug Nuts
Recommended Torque*
65 ± 10 ft-lb
80 ± 10 ft-lb
80 ± 10 ft-lb
80 ± 10 ft-lb
Thread Cutting Screws
(Zinc Plated Steel)
Threads per Inch
Type A
18
15
12
11
N∙cm X 0.08851 = in-lb
N∙m X 0.7376 = ft-lb
Page 2–10
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
88 ± 14 N∙m
108 ± 14 N∙m
108 ± 14 N∙m
108 ± 14 N∙m
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 ® 3100-D/3105-D
20252SL Rev A