TM 9-243
TYPES AND USES
SCREW EXTRACTORS
Screw extractors are used to remove broken screws
without damaging the threads or surrounding material.
There are two basic types of screw extractors, the
straight-flute type and spiral-tapered type.
The straight-flute type requires the following tools to drill
a pilot hole in the screw: a twist drill (1), a drill guide (2),
and a turn nut (3).
The spiral-tapered type requires a twist drill for drilling a
pilot hole.
TAP EXTRACTOR
The tap extractor is usually of the flute type and requires
the use of a wrench to turn the tap. It is used for remov-
ing taps with no external area.
24-2
