Toro 30874 Lawn Mower User Manual


 
Groundsmaster 4500--D/4700--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 + 6in--lb 644 + 68 N--cm 78 + 8in--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 + 2ft--lb 26 + 3N--m 28 + 3ft--lb 38 + 4N--m
M10 X 1.5 38 + 4ft--lb 52 + 5N--m 54 + 6ft--lb 73 + 8N--m
M12 X 1.75 66 + 7ft--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: 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
engine oil 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 b e determined based
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