control cables vary in diameters, ranging from 1/16 of
an inch to 3/8 of an inch.
Cable ends may be equipped with several
different types of fittings such as terminals, thimbles,
bushings, and shackles. Terminal fittings are
generally of the swaged type. (The swaging process
is described in detail in chapter 9 of this manual.)
Terminal fittings are available with threaded ends,
fork ends, eye ends, and single-shank and double-
shank ball ends.
Threaded-end, fork-end, and eye-end terminals
are used to connect the cable to turnbuckles, bell
cranks, and other linkage in the system. The ball
terminals are used for attaching cable to quadrants
and special connections where space is limited. The
Figure 2-33.Types of cable terminal fittings.
single-shank ball end is usually used on the ends of
cables, and the double-shank ball end may be used at
either the ends or in the center of a cable run.
Figure 2-33 shows the various types of terminal
Thimble, bushing, and shackle fittings may be
used in place of some types of terminal fittings when
facilities and supplies are limited and immediate
replacement of the cable is necessary. Figure 2-34
shows these fittings.
A turnbuckle is a mechanical screw device
consisting of two threaded terminals and a threaded
barrel. Figure 2-35 shows a typical turnbuckle
Turnbuckles are fitted in the cable
assembly for the purpose of making minor
adjustments in cable length and for adjusting cable
tension. One of the terminals has right-hand threads
Figure 2-34.Thimble, bashing, and shackle fittings.