Toro Groundsmaster 4500-D Service Manual page 19

Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric Fasteners)
Class 8.8 Bolts, Screws, and Studs with
Thread Size Thread Size
M5 X 0.8 57 + 5 in--lb
M6 X 1.0 96 + 9 in--lb
M8 X 1.25 19 + 2 ft--lb
M10 X 1.5 38 + 4 ft--lb
M12 X 1.75 66 + 7 ft--lb
M16 X 2.0 166 + 15 ft--lb
M20 X 2.5 325 + 33 ft--lb
NOTE: Reduce torque values listed in the table above
by 25% for lubricated fasteners. Lubricated fasteners
are defined as threads coated with a lubricant such as
oil, graphite, or thread sealant such as Loctite.
NOTE: Torque values may have to be reduced when
installing fasteners into threaded aluminum or brass.
The specific torque value should be determined based
Groundsmaster 4500--D/4700--D
Regular Height Nuts Regular Height Nuts
(Class 8 or Stronger Nuts)
640 + 60 N--cm
1018 + 100 N--cm
26 + 3 N--m
52 + 5 N--m
90 + 10 N--m
225 + 20 N--m
440 + 45 N--m
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Class 10.9 Bolts, Screws, and Studs with
Regular Height Nuts Regular Height Nuts
(Class 10 or Stronger Nuts)
78 + 7 in--lb
133 + 13 in--lb
27 + 2 ft--lb
53 + 5 ft--lb
92 + 9 ft--lb
229 + 22 ft--lb
450 + 37 ft--lb
on the fastener size, the aluminum or base material
strength, 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.
Product Records and Maintenance
885 + 80 N--cm
1500 + 150 N--cm
36 + 3 N--m
72 + 7 N--m
125 + 12 N--m
310 + 30 N--m
610 + 50 N--m