MIL-PRF-18148D
3.7 Potentials and currents. Unless otherwise specified, all potentials and currents
mentioned in this specification are average values.
3.8 Design. Requirements for the individual types of connectors are specified in the
applicable specification sheets (see 3.1). The design shall conform to the requirements specified
below when examined in accordance with the visual and mechanical tests of 4.5.2.
3.8.1 Handles (applies only to plugs). Each plug shall include a handle or handwheel
(hereafter included under the term "handle"). The handle shall be within 5 degrees of horizontal
when the plug is fully engaged with its mating receptacle. The plug shall be engaged or
disengaged solely by turning the handle; other forces shall not be applied to the plug or handle to
achieve engagement or disengagement. An automatic and completely self-contained means to
retain the plug in the receptacle shall be built into each plug. The handle shall contain not less
than two holes for inserting a safety wire as shown in the applicable specification sheet. The
locations of the holes are optional except they shall be positioned such that a safety wire can be
inserted through the handle and fastened to the hole in one of the bolts that connect the two
halves of the plug's shell together.
3.8.2 Electrical connections. Each connector shall include electrical connections as
indicated in the applicable specification sheet.
3.8.3 Temperature. The operating and storage temperature extremes shall be 71° ± 2° C
(160° ± 3.6° F) for high temperature and -85° ± 1.1° C (-65° ± 2° F) for low temperature.
3.9 General. The connector shall meet the requirements of this specification and
applicable specification sheet when examined in accordance with the incoming inspection of
4.5.1 and the visual and mechanical inspection of 4.5.2.
3.9.1 Cleaning. After fabrication, the connector shall be cleaned of smudges; loose,
spattered, or excess solder; weld metal; metal chips and mold release agents; or any other foreign
material which might detract from the intended operation, function, or appearance of the
equipment.
3.9.2 Threaded parts or devices. Screws, nuts, and bolts shall be unplated, corrosion
proof, and firmly secured. Screws, nuts, and bolts shall not show evidence of cross threading,
mutilation, burrs, or visible defects.
3.9.3 Surfaces. The surfaces shall have a smooth finish. All surfaces shall be free of
pits, cracks, blow holes, rough spots, rough or irregular surfaces or sharp edges; or other
deformations. All surfaces shall be free of rust, discoloration, and imperfections due to
machining processes such as grinding, honing, or lapping. Contacting surfaces shall be free of
tool marks, gouge marks, nicks, or other surface-type defects. Interference, binding, or galling
shall not be present.
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