MIL-DTL-24646B
AMERICAN SOCIETY OF MECHANICAL ENGINEERS (AMSE)
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Surface Texture (Surface Roughness, Waviness, and Lay).
(Copies of these documents may be obtained from https://www.asme.org/ or ASME International, Three Park
Avenue, New York, NY 10016-5990, 800-843-2763 (U.S/Canada), 001-800-843-2763 (Mexico), 973-882-1170
(outside North America), Email: infocentral@asme.org).
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
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Standard Test Methods for Permeability of Feebly Magnetic Materials.
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Rod, Brass, Free-Cutting, Bar and Shapes for use in Screw Machines.
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Plate, Brass, Sheet, Strip and Rolled Bar.
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Castings, Copper Alloy Sand, for General Applications.
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Electrodeposited Coating of Zinc on Iron and Steel, Standard Specification for.
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Nylon Injection and Extrusion Materials (PA).
(Copies of this document are available from https://www.astm.org or the American Society for Testing Materials, 100
Barr Harbor Drive, West Conshohocken. PA 19428-2959).
2.4 Order of precedence. 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 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the
applicable specification sheet. In the event of any conflict between requirements of this specification and the
specification sheet, the latter shall govern.
3.2 First article. When specified, a sample shall be subjected to first article inspection (see 4.3 and 6.3).
3.3 Materials. Materials shall be as specified (see 3.1). When not specified, the contractor may select any
material that will perform the intended function in the equipment and will otherwise comply with the requirements of
this specification.
3.3.1 Metals. Metals shall be of a corrosion-resistant type or shall be treated to resist corrosion as specified in
MIL-E-917. Dissimilar metals, in contact with each other, shall be selected as specified in MIL-E-917. The selection
of metals in contact shall also be such as to prevent galling.
3.3.1.1 Nonmagnetic materials. When specified (see 3.1), all parts for nonmagnetic fuse boxes shall be of a
nonferrous material or a material generally considered nonmagnetic. The magnetic permeability shall be not greater
than 2.0 after fabrication (see 4.6.10).
3.3.2 Brazing alloys. Brazing alloys for electrical connections shall be silver alloy type as specified in class BAg of
3.3.3 Nonmetallic materials. Nonmetallic materials shall be nonflammable, nontoxic, and fungus-inert as specified
in MIL-E-917.
3.3.3.1 Polyamide (nylon)parts. Molded polyamide (nylon) parts shall be in accordance with ASTM D4066
Group 1, Class 8, Grade 1.
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