2001
Chevrolet Corvette Restoration Kit
Appendix C
The correct fasteners are
available through GM SPO. Many metric fasteners available
in
the aftermarket
parts
channels are designed to metric standards of countries other than the United States, and may
exhibit the following:
• Lower strength
• No numbered head marking system
• Wrong thread pitch
The metric fasteners on GM products are designed to new, international standards. The following are the
common sizes and pitches, except for
special applications:
•
M6.0 X 1
•
M8 X 1.25
•
M10 X 1.5
•
M12X1.75
•
M14 X 2.00
•
M16 X 2.00
Prevailing Torque Fasteners
Prevailing torque fasteners create a thread interface between the fastener and the fastener counterpart
in
order to prevent the fastener from loosening.
All Metal Prevailing Torque Fasteners
These fasteners accomplish the thread interface by a designed distortion or deformation
in
the fastener.
Nylon Interface Prevailing Torque Fasteners
These fasteners accomplish the thread interface by the presence
of
a nylon material on the fastener
threads.
Adhesive Coated Fasteners
These fasteners accomplish the thread interface by the presence
of
a thread-locking compound
on
the
fastener threads. Refer to the appropriate repair procedure
in
order to determine if the fastener may
be
reused and the applicable thread-locking compound to apply to the fastener.
2
3
4
5
6
7
8
9
1.
Prevailing Torque Nut, Center Lock Type
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