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These
electrical connectors are designated MS because the interchangeability
and operating characteristics are determined by U. S. Military
Specifications. These specifications are revised from time
to time to incorporate
performance requirements dictated
by design advances and more stringent requirements of allied
equipment. The several designations of MS, 97 and 97B connectors
meet different requirements of MILC- 5015. These designations
and general descriptions are as follows :
Shell
Shell constructions include solid back shell
(A) and environmental resistant (E, F & R). Environmental
resistant connectors provide a moisture barrier and assure
a positive seal. Shell styles consist of wall type receptacles
(3100), cable receptacles (3101), box receptacles (3102),
straight plugs (3106) and angle plugs (3108). Shell hardware
is manufactured from aluminium alloy and cadmium plated
with olive drab chromate finish. This finish has excellent
conductivity; it is non-reflecting and corrosion resistant.
Black anodised finish and cadmiumfree zinc plating with
olive drab chromate finish are also available. For details,
contact factory.
Contacts
Pin and socket contacts are of brass and generally
silver plated. Gold plating is also available. For details
contact factory. These contacts are available for solder
or crimp termination. Special arrangements of contacts for
pre-mating and pre-earth are also available.
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Inserts and grommet
Synthetic
inserts and grommet manufactured according to MIL-R-3065,
offer high dielectric strength and are resistant to oils,
gasoline and low temperature. 97 series inserts use Diallyl
Phthalate ( Blue DAP). DAPP is dimensionally stable, has high
arc resistance and high insulation resistance under both humidity
and thermal stress.
General description
Plugs are available in A, F and R types. Receptacles
are available in A, E, F and R types.
A solid backshell
Intended for general service usage to provide
convenient means of connecting and disconnecting electrical
circuits in industrial and military applications.
Environmental resisting
Intended for use where the connector will be
subject to heavy condensation and rapid changes in temperature
or pressure and/or where the connector is subjected to high
vibratory conditions.
E
Environmental resisting with
grommet seal and strain relief backshell except for 3102 type.
Environmental resisting with grommet seal, strain
relief backshell and front gasket seal for plug type.
R Environmental resisting
with grommet seal, shorter and lightweight.
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