MIL-DTL-55302/31L
Type II: For receptacle assemblies MIL-DTL-55302/24, MIL-DTL-55302/25 and MIL-DTL-55302/27, remove
contact. For plug assemblies MIL-DTL-55302/23 or MIL-DTL-55302/26, remove contact and ream cavity to
.062 inch (1.57 mm) diameter hole. Secure in place by bending tail over outside edge of housing. Trim excess
material (see figure 3).
Recommended keying:
Types I and II: (-01, -02 and -03): See figures 2 and 4. Two keys of same type located on opposite ends of
connector excluding first six contacts on each end.
Types III and IV: (-04, -05 and -10): See figures 5 and 10.
Receptacle assembly: For PIN M55302/27-91 through M55302/27-229, M55302/24-45 through M55302/24-
88, M55302/25-16 through M55302/25-32 and M55302/130-17 through M55302/130-46, place key (-04) in
numbered position as indicated by location slot (position 6 shown) and secure in place with .086-56 screw
inserted through printed circuit board.
Plug assembly: For PINs M55302/129-09 through M55302/129-18, M55302/110-10 through M55302/110-
35, M55302/23-16 through M55302/23-30 and M55302/26-10 through M55302/26-22, place key (-04) in the
identically numbered position as indicated by location slot (position 6 shown) and secure in place with rivet
M55302/31-05 or M55302/31-10, using AMP tool PIN 91117-1, 91117-3 or equivalent.
Type III (-06): See figure 8.
Receptacle assembly: For PINs M55302/119-01 through M55302/119-11, place key (-06) in one of the eight
possible locations and press fit into mounting hole; then secure in place with .086-56 screw inserted through
printed circuit board.
Plug assembly: For PINs M55302/117-01 through M55302/117-11, or M55302/118-01 through M55302/118-
11, place key (-06) in the identical position as the receptacle (M55302/119-01 through M55302/119-08) and
press fit into mounting hole.
Type IV (-07, -08, and -09): See figure 10.
Receptacle assembly: For PINs M55302/130-01 through M55302/130-16, mount connector to printed circuit
board with mounting/key pin (-09) and secure with mounting nut. Place key (-08) over pin and press fit in to
one of the eight possible locations.
Plug assembly: For PINs M55302/129-01 through M55302/129-08, place key (-07) in the identical position
as the receptacle (M55302/130-01 through M55302/130-16) and secure in place with rivet M55302/31-10
using AMP tool PIN 91117-3 or equivalent.
PIN: M55302/31- (and dash number from table I).
Visual and mechanical inspections, required in accordance with MIL-DTL-55302.
Changes from previous issue. 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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