MIL-DTL-27599D
3.3.1.2 Hydrolytic stability. When tested as specified in 4.3.2, the connector shall be without defects
detrimental to mechanical performance. There shall be no increase in the connector weight greater than
0.75 percent. When subjected to an overtorque at 150 percent of those values specified in table I, there
shall be no evidence of cracking, breaking, or loosening of parts.
3.3.1.3 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
advantageous life cycle costs.
3.3.2 Components. Materials for specific components of the connector shall be as specified (see
3.3.2.1).
3.3.2.1 Classes P and T.
a.
Shell: Impact extruded or machined aluminum alloy.
b.
Coupling ring, jam-nut, and potting ring: Machined aluminum alloy.
c.
Insert: Reinforced epoxy resin or other suitable rigid dielectric material.
d.
Contacts: Style P: Copper alloy: Style S: Beryllium copper; hood or sleeve shall be
corrosion-resistant steel.
e. Bayonet pins: Corrosion-resistant steel.
f. Spring fingers: Heat-treated beryllium copper.
g. Filler compound: RTV silicone conforming to MIL-A-46146 or equivalent.
h. Gaskets: Silicone or fluorosilicone elastomer.
3.3.3 Fungus resistant. Materials used in the construction of these connectors shall be fungus
inert (see 4.3.3).
3.3.4 Nonmagnetic materials. The relative permeability of the wired, assembled, and fully mated
connector assembly shall be less than 2.0μ when measured in accordance with 4.6.22.
3.4 Design and construction. Connectors and accessories shall be designed and constructed to
withstand normal handling incident to installation and maintenance in service. Connector intermateability
control dimensions shall be as specified on figures 1 and 2. Connector accessory interface dimensions
shall be as specified on figures 3 and 4. Recommended panel cut-out dimensions are shown on figure 5.
3.4.1 Contacts. Contacts shall be designed for solder termination and shall be molded into inserts.
Dimensions for contacts shall be as specified on figure 6.
3.4.1.1 Contact arrangement. Contact arrangement shall be in accordance with MIL-STD-1560. The
engaging end of the pin contacts in assembled connectors shall be located within 0.004 inch diameter of
true position and the engaging end of socket contacts in assembled connectors shall be located within
0.004 inch diameter of true position.
3.4.2 Inserts. Inserts shall be molded in one piece and shall be free from voids or surface irregularities
and shall have mold cavity identification. The mold cavity identification number shall appear on the rear
face (solder cup) side of the insert. Inserts shall be secured to prevent rotation. Socket insert entry holes
shall be as specified on figure 6.
3.4.3 Shell. Shells, including mounting flanges, shall be of one-piece construction and shall be
designed to retain their inserts in one position, both axially and with respect to rotation, by mechanical
means. Adhesive may be used as a supplementary retention means.
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