MIL-DTL-38449D
Screw Oval Fillister Head
SAE-AS117001 THRU AS117040
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SAE-AMS-QQ-A-250
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Aluminum and Aluminum Alloy, Plate and
Sheet
(SAE documents may be obtained online at www.sae.org or addressed to the Society of
Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096-0001.)
NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)
NEMA-HP3
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Electrical and Electronic PTFE (Polytetrafluoroethylene)
Insulated High Temperature Hook-Up-Wire; Types ET
(250 Volts), E (600 Volts) and EE (1000 Volts)
(NEMA documents may be obtained online at https://www.nema.org or addressed to National
Electrical Manufacturers Association 1300 North 17th Street, Suite 1847 Rosslyn, Virginia,
United States, 22209.)
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 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 Qualification. Signal and signal/intercommunication amplifiers furnished under this
specification shall be products that are authorized by the qualifying activity for listing on the
applicable qualified products list before contract award (see 4.2 and 6.3).
3.2 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 Components. Each class of signal and signal/intercommunication amplifiers (class 1.2.3. or
4) shall comprise a single, assembled unit. The assembled unit, showing maximum dimensions,
tolerances, mounting provisions, and electrical receptacle location, is shown on Figure 1.
3.4 Materials. Materials and processes used in the amplifiers shall be of high quality, shall be
suitable for the purpose, and shall conform to applicable Government specifications. Mating
bearing surfaces of the case and mounting base shall be of corrosion resisting steel, class 301 in
accordance with ASTM-A666 and ASTM-A240/A240M or suitably treated to resist corrosion
due to fuels, hydraulic fluids, salt fog, or atmospheric conditions likely to be met in storage or
service, or these surfaces shall be of hard aluminum alloy in accordance with AMS-QQ-A-250.
Heat-treatable aluminum alloys shall not be left in the "0" condition.
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