MIL-DTL-18396E
3.5.4.10 Contact resistance. When measured in accordance with 4.7.8, the contact resistance shall not exceed the
following values:
(a) Initial and after vibration and shock 10 milliohms.
(b) After endurance 20 milliohms.
3.5.4.11 Vibration. When tested as specified in 4.7.9, there shall be no momentary opening of closed contacts or
momentary closing of open contacts. There shall be no chance of rotor position nor evidence of electrical or
mechanical damage.
3.5.4.12 High impact shock. The switches shall withstand the high impact shock test specified in 4.7.10 without
electrical or mechanical damage. Momentary opening of the closed contacts or momentary closing of the open
contacts shall not exceed 0.02 seconds. There shall be no change in rotor position. Mechanical shock mounts or
devices by which the switch can be locked-in or locked-out shall not be used.
3.6 Safety. The safety requirements shall be as specified in MIL-E-917 and in requirement 1 of MIL-HDBK-454.
3.7 Position indication. The switch positions shall be indicated on a plastic plate of CFI-5 material in accordance with
ASTM-D5948. All characters shall be indented and easily discernible. The marking shall be black on a gray
background and shall be as specified (see 6.2.1).
3.8 Identification and marking. Identification markings shall be provided on the switch, either engraved or stamped
on a metal plate portion of the switch accessible from the rear, or on an identification plate in accordance with MIL-P-
14024, type A, B or C, and MIL-P-15024/5, furnished as part of the switch. The markings shall be in accordance with
MIL-STD-130. The data shall consist of the following:
Switch manufacturer's name, trademark, or code symbol, in accordance with MIL-STD-1285.
(a)
(b)
Date code in accordance with MIL-STD-1285.
(c)
Switch manufacturer's part number.
(d)
Switch current and voltage ratings.
3.9 Repair parts. When specified (see 6.2.1), repair parts shall be furnished. When the switch is considered not
repairable, the repair part shall be a complete switch for each 25 switches or fraction thereof of exactly the same type
installed. When the switch is considered repairable, the requirements specified in 3.9.1 and 3.9.2 shall govern.
3.9.1 Each repair part shall be equal to the original and suitable for replacement without special tools. Where parts,
as specified, are not readily replaceable, a complete switch shall be furnished as a repair part. Special tools are
defined as those tools not listed in the Federal Supply Catalog.
3.9.2 Quantity. When individual switches are purchased, repair parts shall be furnished on a per switch basis and
shall consist of a complete replacement of all contacts and springs installed in the switch. When switches are being
furnished as part of a switch board or other unit, the quantity of repair parts shall be not less than 10 percent of the
parts installed, and shall be sufficient to replace all contacts and springs in any switch furnished with the switchboard
unit. When repair parts are to be consolidated and furnished on a per ship basis, they shall be not less than 10
percent of the parts installed and shall be sufficient to replace all contacts and springs in any switch installed.
3.10 Drawings. Drawings shall be furnished in accordance with categories F, G, and H and type II of MIL-STD-
31000 in the quantities as specified (see 6.2.1). The following notation shall appear on the drawings: "For design
variations used to fulfill a specific application, refer to the applicable certification data sheet, outline drawing or other
document, as appropriate." The drawings shall contain, as a minimum, the following data:
(a) Outline of the front and side views of the switch, giving dimensions and showing the outlines of all parts of the
switch. The parts shall have piece numbers referenced to the bill of material. Additional views may be shown
for clarity.
(b) List of material which shall include all parts, the materials, manufacturer's identification, and specifications
(where applicable).
(c) The drawings shall delineate the possible variations in number of switch positions; the number of switching
sections; momentary, push-pull and detent action; shorting and nonshorting contact types; the type of knobs
available.
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