MIL-DTL-28731F
3.4.2.6 Parallelism. See figure 2.
A
B
C
Parallelism Straightness
(mm)
(mm)
(mm)
(mm)
inch/inch
.025 (0.63) nominal
.025 (0.63) nominal
.0355 (0.902) Max
.002
.005
.022 (0.56) Min
.022 (0.56) Min
.0325 (0.825) Min
(0.05)
.045 (1.14) nominal
.045 (1.14) nominal
.066 (1.68) Max
.005
.005
.042 (1.07) Min
.042 (1.07) Min
.059 (1.50) Min
(0.13)
.030 (0.76) nominal
.060 (1.52) nominal
.070 (1.78) Max
.005
.005
.027 (0.69) Min
.057 (1.45) Min
.063 (1.60) Min
(0.13)
FIGURE 2. Wrappost geometry.
3.4.3 Polarization. Polarization of the plug with its receptacle shall be accomplished by mechanical
means such as the protective shell; bosses, guide pins, guide sockets, or jackscrews (see 3.1).
3.4.4 Mating. Unless otherwise specified, connector plugs and receptacles shall be capable of being
mated and unmated by hand without the aid of special tools, within the temperature range (see 3.1).
3.4.5 Mounting accessories. Guide pins, guide sockets, shields, and other hardware shall be as
specified (see 3.1).
3.4.6 Actuating hardware design. To aid in the engagement of connectors, actuating hardware shall be
used as required. This hardware shall be categorized as follows and be denoted by their associated type.
3.4.6.1 Type C jackscrew. Rotatable actuating member with a male thread (engages with a type F fixed
socket). The actuating knob includes a screwdriver slot.
3.4.6.2 Type D jacksocket. Rotatable actuating member with a female thread (engages with a type E
fixed screw).
3.4.6.3 Type E fixed screw. Fixed actuating member with a male thread (engages with a type D or H
jacksocket).
7
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