Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Series)
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)
Thread Size
M5 X 0.8
M6 X 1.0
57 + 6 in−lb
96 + 10 in−lb
19 + 2 ft−lb
644 + 68 N−cm
1085 + 113 N−cm
26 + 3 N−m
78 + 8 in−lb
881 + 90 N−cm
1503 + 158 N−cm
38 + 4 N−m
133 + 14 in−lb
28 + 3 ft−lb
M8 X 1.25
M10 X 1.5
M12 X 1.75
M16 X 2.0
M20 X 2.5
38 + 4 ft−lb
52 + 5 N−m
54 + 6 ft−lb
73 + 8 N−m
66 + 7 ft−lb
90 + 10 N−m
225 + 23 N−m
440 + 45 N−m
93 + 10 ft−lb
229 + 23 ft−lb
450 + 46 ft−lb
126 + 14 N−m
310 + 31 N−m
610 + 62 N−m
166 + 17 ft−lb
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
engine oil or thread sealant such as Loctite.
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: 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.
Groundsmaster 3280−D/3320
Page 2 − 5
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