MIL-U-45995
UL 20- General-Use Snap Switches
UL 45 - Portable Electric Tools
(Application for copies of UL publications should be addressed to the Underwriters
Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062, 1285 Walt Whitman Road,
Melville, Long Island, New York 11746, or 1655 Scott Boulevard, Santa Clara,
California 95050.)
(Nongovernment standards and other publications are normally available from the
organizations which prepare or which distribute the documents. These documents also
may be available in or through libraries or other informational services. )
2.3 Order of precedence. In the event of a conflict between the text of this
specification and the references cited herein, (except for associated detail
specifications, specification sheets or MS standards) the text of this specification
shall take precedence. Nothing in this specification, however, shall supersede
applicable laws and regulations unless a specific exemption has been obtained.
3 REQUIREMENTS
3.1 First article. When specified in the contract or purchase order, a sample
shall be subjected to first article inspection (see 4.3 and 6.2.1).
3.2 Material. Materials not specifically designated herein or in the contract
shall be of a quality commensurate with commercial practice within the producing
industry, shall be suitable for the intended purpose in the design of the end item,
and shall meet all requirements specified herein. Materials shall be free from
defects which would adversely affect the performance or maintainability of the
individual components or the overall assembly. It shall not be permissible to use
reclaimed parts as is, or rebuilt from scrap or other used equipment. When dissimilar
metals are used in contact with each other, suitable protection against galvanic
corrosion shall be applied in accordance with MIL-STD-889.
383 Design. Armature mica undercutter furnished shall be of the manufacturer's
latest design. The design shall be such as to provide safe operation. All parts of
the undercutter shall be new, designed and constructed to the requirements listed
here in. All parts subject to wear, breakage, and distortion shall be readily
accessible for adjustment repair.
3.4 Construction. The undercutter shall be complete so that when installed in
its intended application and connected to the applicable source of power, it can be
used for any operation for which it was designed. The undercutter shall be
constructed of parts which are new, without defects and free of repairs. The
structure shall be capable of withstanding all forces encountered during operation of
the machine to its maximum rating and capacity without distortion.
3.4.1 Casting and forgings. All castings and forgings shall be free from
defects, scale, and mismatching. No process such as welding, peening, plugging, or
filling with solder or paste shall be used for reclaiming any defective part.
3.4.2 Welding, brazing, and soldering. Welding, brazing and soldering shall be
of a quality which shall sustain all requirements of the welded, brazed, or soldered
parts. These operations shall not be employed as repair measures for defective parts.
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