which mate with Amphenol receptacles. Thus, receptacles must be mounted firmly by the
locking rings which take these unique spanners. Receptacles always must be properly
installed to withstand the tugs, jerks, pulls, and yanks of cables and cords. Consequently,
these five spanners are for the five standardized sizes of this style of connector for military
use.
(4) Key sets (fig. 9). Two types of key sets come in a TK-105/G. One set of 12 is the allen type
in assorted sizes. The other set consists of six spline-type keys of assorted sizes. Both types
of wrenches are often referred to as setscrew wrenches, or keys. The cross section of an allen
wrench is hexagonal, to fit the hexagonal recess in the head of an allen screw. Examination
of a spline-type wrench, or spline key, reveals six grooves or slots cut longitudinally in the
shaft and equally spaced around the shaft. Similar to the allen screw and allen wrench in
principle, the spline wrench fits into the internally splined recess in the head of a spline
screw. The spline-type design is not so commonly used as the allen design, so the spline keys
in this electronic repairman's tool kit have been limited to the six sizes shown here.
Figure 9. Wrenches: key sets (allen-type and spline-type)
d. Soldering Implements. Soldering of parts in electrical or electronic circuits is a skill that calls for
a repairman's having the right implements practically at his finger tips. Some of the articles you'll use in
soldering may seem downright homely, but they're nonetheless useful. Others are high-quality tools
designed solely for use in soldering.
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