stud assembly. See figure 2-9. The receptacle is an
aluminum alloy forging mounted in a stamped sheet
metal base. The receptacle assembly is riveted to the
access door frame, which is attached to the structure
of the aircraft. The grommet is a sheet metal ring held
in the access panel with the retaining ring. Grommets
are furnished in two types: the flush type and the
protruding type. Besides serving as a grommet for the
hole in the access panel, it also holds the stud
assembly. The stud assembly consists of a stud, a
cross pin, a spring, and a spring cup. The assembly is
designed so it can be quickly inserted into the
grommet by compressing the spring. Once installed
in the grommet, the stud assembly cannot be removed
unless the spring is again compressed.
The Camloc high-stress panel fastener, shown in
figure 2-10, is a high-strength, quick-release rotary
fastener, and may be used on flat or curved inside or
outside panels. The fastener may have either a flush
or protruding stud. The studs are held in the panel
with flat or cone-shaped washers—the latter being
used with flush fasteners in dimpled holes. This
fastener may be distinguished from screws by the
deep No. 2 Phillips recess in the stud head and by the
bushing in which the stud is installed.
A threaded insert in the receptacle provides an
adjustable locking device. As the stud is inserted and
turned counterclockwise one-half turn or more, it
screws out the insert to permit the stud key to engage
the insert cam when turned clockwise. Rotating the
Figure 2-9.—Camloc 4002 series fastener.
2-6
