Spec for Cold Heading Wire
Spec for Cold Heading Wire
(OP)
Anyone know of an ASTM spec for surface quality of cold heading wire intended for threaded fasteners?
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Spec for Cold Heading Wire
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RE: Spec for Cold Heading Wire
Section 8 covers Decarburization, 11 Mill Scale/Surface Condition, and 13 Workmanship, Finish and Appearance. Section 13 is probably the section you are most interested in, as it describes surface imperfections like seams, voids, pits, and the allowable depth [imperfections deeper than the greater of 0.003 in. or 0.5 % of D (where D is finished diameter in inches of material) shall be subject to rejection].
RE: Spec for Cold Heading Wire