Bolt Shank: The
unthreaded portion of a bolt. The bolt shank is the
smooth cylindrical area below the bolt head which
extends to the beginning of the bolt threads.
Bolt Holes: The holes in
a wheel rim
through which the wheel studs
pass. The bolt holes may be straight smooth holes or chamfered
to assist centering of the wheel.
Bolt vs. Cap Screw:
Bolts are familiar fasteners which form or clamp a
joint by being threaded into a nut. A cap screw is a
fastener (that can look identical to a bolt) that
forms a joint by being threaded into a thread hole.
