MIL-DTL-83538D
3.4.4.3 Mating seal. Connectors with pin inserts shall have a resilient face with individual pin barriers
(see figure 2). The pin barrier projections shall seal in their respective lead-in chambers of the hard face
socket insert. The resilient interfacial seal shall provide individual contact seals in the mated condition to
ensure circuit isolation between each contact and contact to shell. The receptacles shall be provided with
a peripheral seal.
3.4.5 Shell. The store receptacle design shall allow mounting of the receptacle flush with the store
outer skin. Shells, including mounting flanges, shall be of one-piece construction and shall be designed
to retain their inserts in one position, both axially and with respect to rotation, by mechanical means.
Adhesive may be used as a supplementary retention means for environmental resisting connectors.
Each receptacle connector shall have at least one blue color band in accordance with EIA-RS359,
indicating a rear release contact retention system. The blue color band shall be located so that it is
readily visible to any person servicing a mounted connector.
3.4.5.1 Shell spring fingers. Spring fingers shall be designed to make electrical contact with the mating
shell without interfering with proper engagement. The springs shall be retained about the shell periphery.
3.4.5.2 Jamnut mounting receptacles. Jamnut mounting receptacles shall be provided with a mounting
nut, MIL-DTL-83538/6, with provisions for locking, and an O-ring (see SAE-AS3582).
3.4.5.3 Weight. The launcher receptacle shall not exceed 185 grams max. The buffer plug shall not
exceed 80 grams max. The store receptacle shall not exceed 185 grams max. These weights include
mounting provisions but do not include accessory hardware (such as cable clamps) and do not include
the launcher receptacle engagement/disengagement mechanism.
3.4.6 Screw threads. Screw threads shall be in accordance with ISO/R68-1973, ISO/R261-1973,
ISO/R262-1973, and ISO/R965-1973, as applicable. Threads shall be checked using ring or plug
gauges. Slight out-of-roundness beyond the specified tolerances is acceptable if threads can accept the
gauges without forcing.
3.4.7 Installation. The launcher receptacle and associated buffer plug are designed for installation in
an engagement/disengagement mechanism in the launcher. This mechanism provides the engagement
and retraction forces for mating and unmating the connector assembly. The connector assembly (see
figure 1) shall comply with the alignment requirements herein during and after exposure to any logical
combination of environment requirements defined herein.
3.4.7.1 Alignment provisions. The launcher receptacle/buffer plug assembly and store receptacle shall
include self-alignment provisions. The interface between the launcher receptacle connector and the
buffer plug shall be scoop-proof and keyed.
3.4.7.2 Applied holding force. The force required to maintain sufficient mating of the combined
launcher receptacle/buffer plug assembly and store receptacle for complying with the requirements
herein shall not exceed 271 Newtons (61 pounds). The applied holding force is the maximum force to be
applied to the connector set (launcher receptacle / buffer plug/store receptacle) during the vibration test.
3.4.8 Cavity fill. If the rear grommet design does not allow for intimate contact between it and the
complete inner perimeter of the shell, any resulting cavity between the insert and the shell shall be filled
with RTV silicone in accordance with MIL-A-46146, or equivalent.
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