MIL-DTL-55302/90F
REQUIREMENTS
Dimensions and configuration: See figure 1.
Material and finish:
Contact: 0.020 inch thick phosphor bronze in accordance with ASTM B139/B139M, composition A. Gold plate
in accordance with ASTM B488, type II, code D, class 1.27, over nickel plating in accordance with
MIL-DTL-38999, appendix A, class 2, 30 to 100 microinches.
Insulator: ASTM D5948, type SDG-F.
Keying hardware: 2 each hex nuts and washers, stainless steel, class 300 in accordance with ASTM B582,
passivated in accordance with SAE-AMS2700, type 2, and 2 each keying sockets, free machining brass in
accordance with ASTM B16/B16M, UNS C36000 or ASTM B121/B121M, UNS C35300, C34200 or
ASTM B124/B124M, UNS C37700, ASTM B36/B36M, UNS C23000, C24000, C26000 or C26800, nickel plated in
accordance with MIL-DTL-38999, appendix A. For direct government procurement the keying hardware shall be
assembled to the connector. For other orders the keying hardware may be furnished loose as specified in contract
or order.
Mounting hardware: 2 each machine screws 2-56, 0.5 inch long, 2 flat washers, and 2 hex nuts or corrosion
resistant steel, shall be furnished in a bag within the connector package for direct government orders. For other
orders, the mounting hardware may be furnished loose as specified in contract or order.
Contact identification: The first and last contact in each row shall be identified by an alphabetical-numerical code
(e.g., A01, B12). The letter designates the row and the number designates the contact position within that row.
Every fifth contact in each row shall have its identification mark molded in.
Contact retention: 6 pounds.
Mating and unmating: The maximum insertion force, in pounds, shall not exceed a value equal to .5 times the
number of contacts, and the withdrawal force, in pounds, shall be a minimum of .11 times the number of contacts
and shall not exceed the measured insertion force.
Contact separation force: 1 ounce minimum.
Contact resistance: The contact resistance shall not exceed 20 milliohms.
Dielectric withstanding voltage:
Sea level: 1,000 volts rms, 60 Hz.
High altitude: 300 volts rms, 60Hz.
Current rating, maximum: 5 amperes.
Keying socket: When required, can be easily keyed to the desired positions by using a standard type wrench.
Connectors are supplied with keying sockets in 4 and D positions.
Mating connectors: Shall conform to and MIL-DTL-55302/91 or MIL-DTL-55302/93 and MIL-DTL-55302/95.
Part or Identifying Number (PIN): M55302/90-(dash number from figure I).
Group submission: MIL-DTL-55302/92, MIL-DTL-55302/94, and MIL-DTL-55302/96.
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