Massey Ferguson 6400 - Issue 4.b
1C10.5
Miscellaneous
C . Tightening torques
Use the tightening torques for screws and nuts as indi-
cated in the tables:
- 1 and 2 for metric threads
- 3 and 4 for inch-system threads
When a specific torque is required, it is stated in the
text.
Tables 1 and 3 indicate the nomal tightening torque
values to apply to threaded zinc-plated elements, with
normal nuts, with coarse or fine threads, with or
without a flat washer or lockwasher, and weldable
nuts more than 0.8 d high.
Tables 2 and 4 indicate the reduced tightening torque
values to apply to threaded elements in assemblies
with zinc-plated self-locking locknuts, phos-
phate-coated nuts and screws, thin nuts, waldable
nuts less than 0.8 d high.
These values are to be applied to dry assemblies. If the
threads are oiled, reduce the tightening torques.
N
OTA: Read the tensile grade on the screw head to
determine the corresponding tightening torque.
Example:
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