Toro Groundsmaster 1200 Service Manual page 23

Other Torque Specifications (continued)
Conversion Factors
in-lb X 11.2985 = N∙cm
ft-lb X 1.3558 = N∙m
Groundsmaster® 1200 Pull-Behind Rotary Mower
18235SL Rev A
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.
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 Type B
18
15
12
11
N∙cm X 0.08851 = in-lb
N∙m X 0.7376 = ft-lb
Page 2–9 Specifications and Maintenance: Torque Specifications
88 ± 14 N∙m
108 ± 14 N∙m
108 ± 14 N∙m
108 ± 14 N∙m
Baseline Torque**
20 20 ± 5 in-lb
18 30 ± 5 in-lb
16 38 ± 7 in-lb
14 85 ± 15 in-lb