MIL-DTL-24317B
SOCIETY OF AUTOMOTIVE ENGINEERS
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Wiring, Aerospace Vehicle
(Copies of these documents are available online at www.sae.org or from Society of Automotive
Engineers, 400 Commonwealth Drive, Warrendale, Pennsylvania, 15096-0001)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between
the text of this document and the references cited herein (except for related specification sheets), the text of this
document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless
a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Detail requirements for individual styles of switches. Detail requirements or exceptions applicable
to individual styles of switches shall be as specified in the applicable complementary document (e.g.
specification sheet, drawings, or other document). In the event of any conflict between requirements of
this specification and the complementary documents, the latter shall govern (see 6.2).
3.2 Qualification and preproduction.
3.2.1 Qualification. Switches furnished under this specification and covered by specification sheets,
shall be products that are qualified for listing on the applicable qualified products before contract award
3.2.2 Preproduction. Switches furnished under this specification and not covered by specification
sheets shall be products which have passed the preproduction inspection specified in 4.6. This
preproduction inspection shall be performed after award of contract and prior to production (see 6.3.2).
3.3 Material. Material shall be as specified herein. However, when a definite material is not specified,
a material shall be used which will enable the switches to meet the performance requirements of this
specification. Acceptance or approval of any constituent material shall not be construed as a guaranty of
the acceptance of the finished product.
3.3.1 Metals. All metal parts, other than current-carrying parts shall be of corrosion-resistant material,
or shall be suitably plated to resist corrosion.
3.3.1.1 Ferrous metals. Ferrous material shall not be used for current-carrying parts except for feed-
through terminals in headers.
3.3.1.2 Dissimilar metals. When dissimilar metals are used in intimate contact with each other,
protection against electrolysis and corrosion shall be provided. The use of dissimilar metals in contact,
which tend toward active electrolytic corrosion (particularly brass, copper, or steel used in contact with
aluminum or aluminum alloy) is not acceptable. However, metal plating or metal spraying of dissimilar
base metals to provide similar or suitable abutting surfaces is permitted. The use of dissimilar metals
separated by a suitable insulating material is also permitted.
3.3.2 Plastics.
3.3.2.1 Thermosetting. Unless otherwise specified (see 3.1), thermosetting plastics shall be in
accordance with ASTM-D5948; however, cotton or wood-flour-filled materials shall not be used.
3.3.2.2 Thermoplastics. Thermoplastics shall not be used for major structural parts, that is, switch
housing, terminal header and assembly frame. When used for other parts, the thermoplastic material
material which is self-extinguishing when tested in accordance with ASTM-D635.
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