MIL-DTL-28731F
3.7 Marking.
3.7.1 Connectors. Each connector shall be legibly and permanently marked, die cast, or stamped in
accordance with MIL-STD-1285. The marking shall be placed on a side of the connector parallel to the
long dimension. Wherever possible, the marking information shall be located such that it is not obscured
by the subsequent addition of a connector shield.
3.7.2 Contact positions. Letters shall be arranged to avoid confusion between contacts. All letters or
numerals shall appear on the front and rear face of each insert. Lettering of the plug insert shall
correspond with that of the mating receptacle insert.
3.8 Workmanship. The workmanship shall be in accordance with the requirements contained herein.
Connectors shall meet the design and dimensional requirements of this specification. There shall be no
evidence of poor molding or fabricating, damaged or improperly assembled contacts, peeling or chipping
of the plating or finish, nicks and burrs of metal parts surfaces. The contacts shall be free from burrs or
sharp corners, which would damage the plating of mating connectors.
4. VERIFICATION
4.1 Classification of inspection. The inspections requirements specified herein are classified as follows:
a. First article inspection (see 4.5).
b. Conformance inspection (see 4.6).
4.2 Test equipment and inspection facilities. Test and measuring equipment and inspection facilities of
sufficient accuracy, quality and quantity to permit performance of the required inspection shall be
established and maintained by the contractor.
4.3 Materials inspection. Materials inspection shall consist of certification supported by verifying data
that the materials and finishes listed in 3.3.6, 3.3.7, 3.3.8, and 3.3.9, are used in fabricating the
connectors, and shall be in accordance with the applicable referenced specifications or requirements prior
to such fabrication.
4.4 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in
accordance with the test conditions specified in the "GENERAL REQUIREMENTS" of EIA-364 and
MIL-STD-202.
4.5 First article inspection. First article inspection shall consist of materials inspection, all the tests in
examinations of this specification. First article inspection shall be performed at a laboratory acceptable to
the Government (see 6.3).
4.5.1 Sample size and inspection routine.
4.5.1.1 Connectors - first article inspection of individual contacts. Six each completely assembled plug
or receptacle (2 of each type minimum) complete with guide pins, jackscrews, and with the insulator
arrangement in accordance with specification sheet (see 3.1), shall be submitted for first article inspection.
Mating plugs and receptacles shall be furnished. Contacts shall be installed in the insulator (see 4.5.2).
The samples shall then be subjected to the inspection specified in table lV.
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