Toro 03781, Service Manual

Page: 21 / 468

Reelmaster 7000−D
Page 2 − 5
Product Records and Maintenance
Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Series)
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
Reduce torque values listed in the table above by 25%
for lubricated fasteners. Lubricated fasteners are de-
fined as threads coated with a lubricant such as engine
oil or thread sealant such as Loctite.
Torque values may have to be reduced when installing
fasteners into threaded aluminum or brass. The specific
torque value should be determined based on the fasten-
er size, the aluminum or base material strength, length
of thread engagement, etc.
The nominal torque values listed above are based on
75% of the minimum proof load specified in SAE J1199.
The tolerance is approxi 10% of the nominal
torque value.
Product Records and
Maintenance