Industrial 1.6L General Information 0-7
Prevailing Torque Fasteners
A prevailing torque nut is designed in order to develop
an interface between the nut and bolt threads. Distor-
tion of the top of the metal nut or using a nylon patch
on the threads in the middle of the hex flat causes that
interface.
A prevailing torque bolt/nut that is clean and free of rust
may be reused. If there is any doubt, replace the
fastener:
1. Clean away all dirt or foreign material.
2. Inspect the fastener for signs of overtightening.
3. Hand start the fastener at the original location.
4. Inspect the fastener for torque development,
referring to the table below.
5. Tighten the fastener within specifications.
Legend
(1) Prevailing Torque Nut, Center Lock Type
(2) Prevailing Torque Nut, Top Lock Type
(3) Prevailing Torque Nut, Nylon Patch Type
(4) Prevailing Torque Nut, Nylon Washer Insert Type
(5) Prevailing Torque Nut, Nylon Insert Type
(6) Prevailing Torque Bolt, Dry Adhesive Coating Type
(7) Prevailing Torque Bolt, Thread Profile Deformed Type
(8) Prevailing Torque Bolt, Nylon Strip Type
(9) Prevailing Torque Bolt, Out-of-Round
Thread Area Type
171892
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