SECTION 1 - GENERAL INFORMATION
1-12
STANDARD TORQUE FOR DRY, ZINC
PLATED, AND STEEL FASTENERS
(METRIC FASTENERS)
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.
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.
Thin height nuts include jam nuts.
THREAD SIZE
CLASS 8.8 BOLTS, SCREWS, AND
STUDS WITH REGULAR HEIGHT
NUTS (CLASS 8 OR STRONG NUTS)
CLASS 10.9 BOLTS, SCREWS, AND
STUDS WITH REGULAR HEIGHT NUTS
(CLASS 10 OR STRONG NUTS)
M5 x 0.8
57 ± 5 in-lb
640 ± 60 N-cm
78 ± 7 in-lb
885 ± 80 N-cm
M6 x 1.0
96 ± 9 in-lb
1018 ± 100 N-cm
133 ± 13 in-lb
1500 ± 150 N-cm
M8 x 1.25
19 ± 2 ft-lb
26 ± 3 N-m
27 ± 2 ft-lb
36 ± 3 N-m
M10 x 1.5
38 ± 4 ft-lb
52 ± 5 N-m
53 ± 5 ft-lb
72 ± 7 N-m
M12 x 1.75
66 ± 7 ft-lb
90 ± 10 N-m
92 ± 9 ft-lb
125 ± 12 N-m
M16 x 2.0
166 ± 15 ft-lb
225 ± 20 N-m
229 ± 22 ft-lb
310 ± 30 N-m
M20 x 2.5
325 ± 33 ft-lb
440 ± 45 N-m
450 ± 37 ft-lb
610 ± 50 N-m
