MIL-DTL-55302/127C
REQUIREMENTS
Design and construction:
Dimensions and configurations: See figures 1 and 2 and tables I and II.
Material:
Body: In accordance with MIL-DTL-55302.
Plating: The contact plating shall be gold in accordance with MIL-DTL-55302 as specified in table
III, over nickel in accordance with MIL-DTL-55302.
Contact identification: See figure 1.
Mating and unmating: The maximum connector mating force shall be 7 ounces times the number of
contact positions, and the minimum connector unmating force shall be .75 ounce times the number of
contact positions. For purposes of testing, the mating plug connector shall be considered to be the
correct number of .025 square wrappost, gold plated. Maximum post engagement length is .390 inch
and minimum post engagement length is .308 inch, when connector is mounted as shown on
figure 1.
Contact resistance: No individual contact pair shall have a resistance exceeding 12 milliohms when
mated to a gold plated .025 square wrappost.
Dielectric withstanding voltage:
Sea level: 750 volts rms.
High altitude: 275 volts rms.
Current rating: 3.0 amperes maximum.
Mating post: See figure 2. For total mating positions, see table I.
Contact engagement and separation force:
Engagement force: Shall be 6 ounces maximum after three insertions of a .0260 + .0000, -.0001
inch square pin.
Separation force: Shall be .75 ounce minimum.
Printed wiring terminations: See figure 1.
Polarization: Connector polarization may be accomplished by use of a keying plug
(PIN M55302/127-00KY) which is inserted into the particular contact circuit to be keyed. Keying plug is
nylon in accordance with ASTM D4066.
Color: Natural.
Alignment: To be accomplished by user.
Method of mounting: Not applicable.
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