MIL-DTL-3650B
3.3 Design and construction. Connectors shall be of the design, construction, and physical dimensions
specified (see 3.1). Wherever feasible, parts having similar electrical characteristics may be combined
(fabricated as a single piece) to simplify construction. Parts of unlike materials may be combined such as
brass and copper beryllium, provided copper beryllium is used in the fabrication of the single-piece
construction.
3.3.1 Metal parts. Unless otherwise specified (see 3.1), all metal parts shall have a silver plating of not
less than .0002 inch (0.005 mm) thick, of sufficient smoothness and density to withstand the salt-spray
(corrosion) test specified in 4.4.4. Silver plating shall be in accordance with ASTM B700. Dimensions of
metal parts shall include the plating (see 3.1).
3.3.2 Screw threads. Screw threads shall be in accordance with FED-STD H28, and shall have the
specified fit after plating (see 3.1).
3.3.3 Insulators. Insulators shall have no visible flaws or cracks. A coating of insulating and sealing
compound (see 3.2.3) shall be applied to the insulators prior to assembly.
3.3.4 Gage tests for contacts (see 4.4.1.1).
3.3.4.1 Center contacts (female). Center contacts shall meet the gage tests specified in 4.4.1.1.1.
3.3.4.2 Outer contacts. Outer contacts shall meet the gage tests specified in 4.4.1.1.2.
3.5 Coupling nuts. After assembly, the coupling nut shall be free-finger-turning and shall not become
detached from the connector body, when tested in accordance with 4.4.2.
3.4 Dielectric withstanding voltage (when applicable). When connectors are tested as specified in
4.4.3, there shall be no evidence of breakdown.
3.5 Salt spray (corrosion). When connectors are tested as specified in 4.4.4, there shall be no
evidence of destructive corrosion or pitting. Destructive corrosion shall be construed as any type of
corrosion, which in any way interferes with mechanical or electrical performance.
3.6 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible, provided that the
material meets or exceeds the operational and maintenance requirements, and promotes economically
and advantageous life cycle costs.
3.7 Marking. Connectors shall be marked in accordance with MIL-STD-130, with the type designation
and the manufacturer's code symbol. Marking shall be in depressed characters approximately .093 inch
(2.38 mm) high, in the place specified (see 3.1).
3.8 Workmanship. Connectors shall be processed in such a manner as to be uniform in quality and
shall be free from sharp edges, burrs, except where sharp edges are required for mechanical or electrical
reasons. All solder joints shall be thoroughly cleaned.
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