REQUIREMENTS: Material:
MS27143C
Shell: Rubber in accordance with ASTM D2000, M3BC610A14C12E034F19.
Terminal: Brass composition, temper half hard minimum in accordance with ASTM B 36/B 36M, ASTM 121/B 121M or ASTM B124/B 124M.
Washer: Steel, commercial quality, 1008 to 1020, HRP60 or CR, temper optional, in accordance with
QQ-S-698. Protective finish:
Terminal: Silver plate, grade D, class S, .0002 minimum thickness, in accordance with ASTM B700. Washer: Cadmium plate, type 1, class 2, in accordance with SAE AMS QQ-P-416.
Mating plug: See MS27142.
When connectors are coupled, the following requirements shall apply:
Voltage drop: The voltage drop shall not exceed 20 millivolts and shall meet the requirements outlined in MIL-STD-202, method 307.
Dielectric strength: The assembly shall withstand dielectric strength test of 1000 volts, and meet the requirements of MIL-STD-202, method 302.
Waterproof requirements: The assembly shall be waterproof. Refer to MIL-HDBK-1184, or equivalent, for guidance on waterproof testing.
Salt spray corrosion test: The assembly shall meet the requirements of salt spray corrosion test outlined in MIL-STD-202, method 101 (5% saline solution, 200 hours duration).
Pull test: The terminal to be crimped to the cable shall withstand a pull test of 90 pounds (40 kilograms). Separation force: The force required to uncouple the connectors shall not exceed 50 percent of the
values expressed in the pull test above at -55°C and at 85°C.
Part or Identifying Number (PIN): MS27143-1.
Engineering parts list 8338568 for MS27143 may be obtained from the U.S. Army Tank Automotive
Command, Warren, MI., 48397-5000.
(Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes.)
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