MIL-DTL-24317B
3.3.3 Rubber. All rubber shall be in accordance with A-A-59588.
3.3.4 Finish. Unless otherwise specified (see 3.1), all external aluminum parts shall be anodized in
accordance with MIL-A-8625 and all internal aluminum parts shall be chemically treated in accordance
with MIL-DTL-5541. Unless otherwise specified (see 3.1), bezels, mounting flanges, barriers, mounting
bushings and associated mounting hardware that are designed to be exposed at the front of the panel
after assembly shall have a black lusterless finish.
3.5 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and
externally. Tin content of switch components and solder shall not exceed 97 percent, by mass. Tin shall
be alloyed with a minimum of 3 percent lead, by mass (see 6.5)
3.4 Design and construction. Switches covered by this specification shall be of the design,
construction, and physical dimensions specified (see 3.1).
3.4.1 Terminals. Unless otherwise specified (see 3.1), terminals shall be of the solder-lug type and
shall be designed so that the wires can be mechanically secured prior to soldering. Terminals shall be
solder coated; electroplated tin, or gold plated. When electroplated, the coating shall be 0.0002 inch
minimum thickness, over a copper undercoat of 0.0002 inch minimum thickness. For gold-plating, the
coating shall be 0.00005 inch minimum thickness over a copper undercoat of 0.0001 inch minimum
thickness.
3.4.1.1 Identification of terminals. Terminals shall be identified to indicate the contact arrangement of
the switch or lamp circuit, as applicable (see 3.1). When specified (see 3.1), terminal identification shall
be sugmented by a circuit schematic. There shall be no overmarking of terminals.
3.4.2 Plunger. The operating plunger shall be insulated from all current-carrying parts.
3.4.3 Switch housing (when applicable, see 3.1). The switch housing shall be as specified.
3.4.4 Switch functions. A multistation, pushbutton switch shall incorporate two or more pushbutton
stations on a common frame. The following functions may be provided (see 6.2):
3.4.4.1 Independent. There shall be no mechanical linkage. Individual pushbutton stations shall have
independent functions.
3.4.4.2 Momentary interlocking. Each pushbutton station shall have momentary action, and only one
button shall be depressed to actuation at one time.
3.4.4.3 Locking with master release. Each pushbutton station shall lock down when depressed and
shall release by depressing a special momentary release station. One or more pushbuttons may be
depressed at one time, but all shall release simultaneously.
3.4.4.4 Locking with remote release. Each pushbutton station shall lock down when depressed and
shall release by energizing an electromagnetic device incorporated into the pushbutton switch. One or
more pushbuttons may be depressed at one time but all shall release simultaneously.
3.4.4.5 Locking and interlocking. Each pushbutton station shall lock down when depressed and shall
release by depressing any other button. Only one pushbutton shall be depressed to actuation at one
time.
3.4.4.6 Independent locking and interlocking. Each pushbutton station shall lock down when
depressed and shall release only by pushing it again. Only one pushbutton may be depressed at one
time.
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