Service Manual

Class 8.8 Bolts, Screws, and Studs with Class 10.9 Bolts, Screws, and Studs with
Thread
Size
Thread Size
Regular
Height Nuts
Regular Height Nuts
Regular
Height Nuts
Regular Height Nuts
(Class 8 or Stronger Nuts) (Class 10 or Stronger Nuts)
M5 X 0.8
M6 X 1.0
M8 X 1.25 19 + 2 ft–lb
M10 X 1.5 38 + 4 ft–lb
M12 X 1.75 66 + 7 ft–lb
M16 X 2.0
M20 X 2.5 325 + 33 ft–lb
27 + 2 ft–lb
53 + 5 ft–lb
229 + 22 ft–lb
450 + 37 ft–lb
NOTE: Reduce torque values listed in the table above
are defined as threads coated with a lubricant such as
oil, graphite, or thread sealant such as Loctite.
NOTE:
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
nominal torque value.
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric Fasteners)
57 + 5 in–lb
96 + 9 in–lb
166 + 15 ft–lb
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
78 + 7 in–lb
133 + 13 in–lb
92 + 9 ft–lb
885 + 80 N–cm
1500 + 150 N–cm
36 + 3 N–m
72 + 7 N–m
125 + 12 N–m
310 + 30 N–m
610 + 50 N–m
by 25% for lubricated fasteners. Lubricated fasteners
Torque values may have to be reduced when
installing fasteners into threaded aluminum or brass.
SAE J1199. The tolerance is approximately + 10% of the
Product Records
and Maintenance
Multi Pro 1200/1250
Page 2 – 5
Product Records and Maintenance