Standard Torque For Dry, Zinc, And Steel Fasteners (Metric Fasteners) - Toro 260 Series Service Manual

Standard Torque for Dry, Zinc, and Steel Fasteners (Metric Fasteners)

Thread Size
M5 X 0.8
M6 X 1.0
M8 X 1.25
M10 X 1.5
M12 X 1.75
M16 X 2.0
M20 X 2.5
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
on the fastener size, the aluminum or base material
strength, length of thread engagement, etc.
260 Series Tractor Service Manual
Class 8.8 Bolts, Screws, and Studs with
Regular Height Nuts
(Class 8 or Strong Nuts)
57 ± 5 in-lb
96 ± 9 in-lb
19 ± 2 ft-lb
38 ± 4 ft-lb
66 ± 7 ft-lb
166 ± 15 ft-lb
325 ± 33 ft-lb
Class 10.9 Bolts, Screws, and Studs with
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
Note: The nominal torque values listed above are
based on 75% of the minimum proof load specified in
SAE J1199. The tolerance is approximately
the nominal torque value. Thin height nuts include jam nuts.
SPECIFICATIONS
Regular Height Nuts (
Class 10 or Strong Nuts)
78 ± 7 in-lb 885 ± 80 N-cm
133 ± 13 in-lb 1500 ± 150 N-cm
27 ± 2 ft-lb
53 ± 5 ft-lb
92 ± 9 ft-lb 125 ± 12 N-m
229 ± 22 ft-lb 310 ± 30 N-m
450 ± 37 ft-lb 610 ± 50 N-m
36 ± 3 N-m
72 ± 7 N-m
± 10% of
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