MIL-DTL-55302/26G
REQUIREMENTS:
Design and construction:
Dimensions and configuration: See figure 1.
Material:
Insulator body: Insulator material shall be in accordance with MIL-DTL-55302 or type GLCP-30F in
accordance with ASTM D5138 or MIL-M-24519.
Contact material: Contact material in accordance with MIL-DTL-55302 or beryllium copper alloy C17400 in
accordance with ASTM B768.
Plating: The contact plating for the engagement area, .150 inch (3.81 mm) minimum length, shall be gold in
accordance with MIL-DTL-55302 over nickel in accordance with MIL-DTL-55302. The contact plating for the
solder tail area, .160 inch (4.06 mm) minimum length, shall be tin lead over nickel, with tin lead dip in
accordance MIL-DTL-55302 for .080 inch (2.03 mm) minimum length. The remainder of the contact shall be
nickel plated in accordance with MIL-DTL-55302.
Contact identification: See figure 1.
Coating: The aluminum pin protector shall be coated in accordance with MIL-A-8625, type II or epoxy coated
.001 to .003 inch (0.03 to 0.08 mm) thick.
Contact rating: 3.0 amperes maximum per contact, 2.25 amperes continuous per contact at 75º F.
Keying: See MIL-DTL-55302/31.
Mating and unmating: The maximum mating force in pounds shall the number of contacts multiplied by .25 and
the withdrawal force in pounds shall be a minimum of .025 times the number of contacts and shall not exceed the
measured insertion force.
Contact resistance: The average contact resistance of all contact measured shall not exceed .015 ohm, and no
individual contact pair shall have a resistance exceeding .020 ohm.
Contact retention: 3 pounds minimum.
Dielectric withstanding voltage:
Sea level: 900 volts rms.
High altitude: 200 volts rms.
Part or Identifying Number (PIN): M55302/26-(dash number from figure 1).
Patent number 3,404,367. The Government has a royalty free license under this patent for the benefit of
manufacturers of the item either for the Government or for use in equipment to be delivered to the Government.
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