NAVAIR 01-1A-505-2
007 03
TO 00-25-255-1
Page 31
TM 1-1500-323-24-2
20. CONNECTOR ACCESSORIES CRIMP RELEASE
boot adapter is used to secure shrink boot to connector
CONTACTS.
and prevent entry of moisture into connector
(Figure 21).
21. Connector accessories to maintain operational
characteristics for crimp release (front and rear) contacts
27. E N V I R O N M E N T A L
BACKSHELL.
An
are divided into the following categories:
environmental backshell is a device that provides
protection from moisture, dirt, air, or dust which may
a.
Grommet Nuts.
reduce performance of unit. Environmental backshells
do not provide protection from non-physical
b.
Cable Clamps/Strain Reliefs.
environments such as RF and Radiation (Figures 22,
23, 24 and 25).
c.
Shrink Boots and Adapters.
28. EMI/RFI GROUNDING TERMINATORS. EMI/
d.
Environmental Backshells.
RFI grounding terminators are used to ground or shield
a connector to reduce the electromagnetic radiation
e.
EMI/RFI Grounding Terminators.
and radio frequency interference from other equipment.
A physical and electrical shield is employed to terminate
f.
Non-Environmental EMI/RFI Backshells.
a cable assembly to a ground or some other
predetermined point with respect to ground. Shields
g.
Environmental EMI/RFI Backshells.
can be applied to individual wires, cables, bundles or
harnesses (Figures 26 and 27).
h.
Conduit Fittings.
29. N O N - E N V I R O N M E N T A L E M I / R F I B A C K -
i.
Dummy Receptacles.
SHELL. A non-environmental EMI/RFI backshell is an
attachment on the rear of a connector that does not
j.
Dust Caps.
protect against moisture, dust, and dirt but does pro-
vide EMI/RFI protection (Figures 28, 29, 30, 31, 32 and
k.
Gasket for Flange Mount Receptacles.
33).
l.
Mounting Nuts for Jam Nut Receptacles.
30. ENVIRONMENTAL EMI/RFI BACKSHELL.
Environmental EMI/RFI backshells are used when
m.
Rubber Bushings.
moisture entry and EMI/RFI protection is needed
(Figures 34, 35, 36 and 37).
n.
Sealing Plugs.
31. CONDUIT FITTINGS. Conduit fittings are used to
22. GROMMET NUTS. The grommet nut is a threaded
connect a conduit to a connector and may be either a
ring nut utilized to securely hold connector grommet
ferrule, nut, adapter, box fitting, 45 elbow, 90 elbow,
in place (Figure 14).
hex nut, seal assemblies, or Y fittings (Figure 38).
23. CABLE CLAMPS/STRAIN RELIEFS. The following
32. DUMMY RECEPTACLES. Dummy receptacles are
two paragraphs explain the two types of cable support
provided and used to stow unmated plugs, caps, or
or clamping devices.
protective covers when related component is not in
operational use. The dummy receptacles shall be
24. Cable Clamps. A cable clamp is a support or
marked and located to permit easy access (Figure 39).
clamping device which requires use of an intermediate
component for attachment to back of connector.
33. DUST CAPS. Protective covers are more commonly
called dust caps. The purpose of dust caps is to prevent
25. Strain Reliefs. A strain relief is a support or clamping
dirt from entering connectors, pins, and sockets and to
device which attaches directly to connector (Figures 15,
prevent coupling device from damage (Figure 40).
16, 17, 18, 19 and 20).
34. GASKET FOR FLANGE MOUNT RECEPTACLES.
26. SHRINK BOOTS AND ADAPTERS. Shrink boots
Gaskets for flange mount receptacles are used to seal
are protective coverings over wire or connector in
between the receptacle flange and mounting structure
addition to the normal jacket or insulation. The shrink
(Figure 41).
