Automotive Electrical and Electronic Systems Classroom Manual Fifth Edition Update by John F. Kershaw

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Figure 1-24.
Using a die to cut threads on a rod.
Figure 1-23.
on the right.
Various punches on the left and a chisel
TAP HOLDERS
TAPS
DIES
THREAD CHASERS
DIE HOLDER
Figure 1-25. Dies are used to make threads on the outside of round stock. Taps are used
to make threads inside holes. A thread chaser is used to clean threads without removing
metal.
Figure 1-26. Starting a tap in a drilled hole. The hole diameter
should be matched exactly to the tap size for
proper thread clearance. The proper drill size to use is
called the tap drill size.
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