The Camloc high-stress panel fastener, shown in
figure
5-10,
is
a
high-strength,
quick-release,
rotary-type fastener. It 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.
AIRLOCK FASTENERS
Figure 5-11 shows the parts that make up an Airloc
fastener. Similar to the Camloc fastener, the Airloc
fastener consists of a receptacle, stud, and cross pin.
The stud is attached to the access panel and is held in
place by the cross pin. The receptacle is riveted to the
access panel frame.
Two types of Airloc receptacles are available—the
fixed type (view A) and the floating type (view B). The
floating type makes for easier alignment of the stud in
the receptacle. Several types of studs are also available.
In each instance the stud and cross pin come as separate
units so that the stud may be easily installed in the
access panel.
DZUS FASTENERS
Dzus fasteners are available in two types. One is the
light-duty type, used on box covers, access hole covers,
and lightweight fairing. The second is the heavy-duty
type, which is used on cowling and heavy fairing. The
main difference between the two types of Dzus
fasteners is a grommet, used with the heavy-duty
fasteners. Otherwise their construction features are
about the same.
Figure 5-12 shows the parts making up a light-duty
Dzus fastener. Notice that they include a spring and a
stud. The spring is made of cadmium-plated steel music
wire and is usually riveted to an aircraft structural
member. The stud comes in a number of designs (as
shown in views A, B, and C) and mounts in a dimpled
hole in the cover assembly.
5-8
ANF0510
1
2
3
4
5
10
6
2
6
7
8
9
5
10
1. TENSION SPRING
2. STUD ASSEMBLY
3. RETAINING RING
4. RETAINING RING
5. RECEPTACLE ASSEMBLY
6. RECEPTACLE ATTACHING RIVETS
7. OUTER SKIN
8. INNER SKIN
9. INSERT
10. COVER
Figure 5-10.—Camloc high-stress panel fastener.
