Toro Groundsmaster 7210, Service Manual

Page: 23 / 342

Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric
Fasteners)
Thread Size
Class 8.8 Bolts, Screws, and
Studs with Regular Height Nuts
(Class 8 or Stronger Nuts)
Class 10.9 Bolts, Screws, and
Studs with Regular Height Nuts
(Class 10 or Stronger Nuts)
M5 X 0.8 57 ± 6 in-lb 644 ± 68 N∙cm 78 ± 8 in-lb 881 ± 90 N∙cm
M6 X 1.0 96 ± 10 in-lb 1085 ± 113 N∙cm 133 ± 14 in-lb 1503 ± 158 N∙cm
M8 X 1.25 19 ± 2 ft-lb 26 ± 3 N∙m 28 ± 3 ft-lb 38 ± 4 N∙m
M10 X 1.5 38 ± 4 ft-lb 52 ± 5 N∙m 54 ± 6 ft-lb 73 ± 8 N∙m
M12 X 1.75 66 ± 7 ft-lb 90 ± 10 N∙m 93 ± 10 ft-lb 126 ± 14 N∙m
M16 X 2.0 166 ± 17 ft-lb 225 ± 23 N∙m 229 ± 23 ft-lb 310 ± 31 N∙m
M20 X 2.5 325 ± 33 ft-lb 440 ± 45 N∙m 450 ± 46 ft-lb 610 ± 62 N∙m
Note: The torque values must be reduced when installing the fasteners into
threaded aluminum or brass. The specified torque value should be determined
based on the aluminum or base material strength, fastener size, length of thread
engagement, etc.
Note: The nominal torque values listed above are based on 75% of the minimum
proof load specified in SAE J1199. The tolerance is approximately ± 10% of the
nominal torque value.
Note: Reduce the torque values listed in the table above by 25% for lubricated
fasteners. Lubricated fasteners are defined as threads coated with a lubricant,
such as engine oil, or a thread sealant, such as Loctite.
Groundsmaster 7210 Page 2–7 Specifications and Maintenance: Torque Specifications
16222SL Rev C