MIL-DTL-55302/63H
Requirements:
Dimensions and configuration: See figure 1.
Material: Guide pins, type X guide sockets, jackscrews and jack sockets shall be made of corrosion resisting
stainless steel in accordance with ASTM A581/A581M or ASTM A582/A582M passivated in accordance with SAE-
AMS-2700, type 2 and need not be overplated or shall be corrosion resistant copper nickel alloy (61 ±2% nickel,
2.5% max. other, and the balance zinc and shall have a brinell hardness of 145 to 175. Type Y guide sockets
shall be beryllium copper in accordance with ASTM B196/B196M or ASTM B197/B197M, nickel plated in
accordance with SAE-AMS-QQ-N-290, class 2, 50 to 150 microinches.
Plating: The contact plating shall be in accordance with MIL-DTL-55302 or gold in accordance with ASTM B488
type II, code C, class 1.27, over nickel plating in accordance with SAE-AMS-QQ-N-290, class 2, 50 to 150
microinches in the engaging area and gold in accordance with ASTM B488 type II, code C, class 0.51, or type III,
code A, class 0.051 over nickel plating in accordance with SAE-AMS-QQ-N-290, class 2, 50 to 150 microinches in
the termination area.
Contact identification: See figure 1.
Contact resistance: The average contact resistance of all contacts measured shall not exceed 0.010 ohm, and no
individual contact pair shall have a resistance exceeding 0.020 ohm.
Dielectric withstanding voltage:
Sea level: 1,000 volts rms.
High altitude: 300 volts rms.
Current rating: 5.0 amperes maximum in accordance with contact.
Polarization: Type X, regular, guide pin and socket, full round (see detail F). Type Y, adjustable "D" shaped guide pin
and/or socket (see detail G and MIL-DTL-55302/57, detail B). All connectors are supplied in the -1 polarized position.
For other than OEM use, connectors may be repolarized by using M55302/57-01 spanner wrench and M55302/63-01
guide pin and guide socket kit. When guides are removed and reinstalled in another position apply Loctite 83-CV or
equivalent to the threads. Ordering connectors in other than, the -1 polarized position may be done by the OEM's by
placing the desired polarized position in brackets three spaces after the Part or Identifying Number (PIN) on the order.
Example M55302/63-A10Y [-32]. Polarization pins and sockets shall be adjusted to any desired configuration by
spanner wrench (M55302/57-01). Ordering connectors in the -1 polarized position without Loctite 83-CV or equivalent
applied may be done by placing a "-0" in brackets three spaces after the part on the purchase order. Guide sets, as
installed, shall withstand 7-inch ounces backoff torque applied through the guide set mounting nut.
M55302/63-01 kit: Consists of one type Y "D" shaped guide socket and spanner nut and one type Y "D" shaped
guide pin and spanner nut (see detail H).
Example PIN:
M55302/63
A
10
L
Basic number of
Type of terminal
Number of
Type of mounting
specification
(see figure 1)
contacts
hardware
sheet
(see figure 1)
A = solder cup
L = .700 slotted turning jackset
B = dip terminal .140 long
M =.500 slotted turning jackset
C = dip terminal .172 long
S = .200 slotted turning jackset
D = .058 flexible circuit terminal
F = fixed jackset
E = .100 flexible circuit terminal
H = .200 hex turning jackset
X = full round
Y = "D" shaped
7
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