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Scope

1.1 This specification covers application, performance and dimensional requirements for electrodeposited coatings on threaded fasteners with metric screw threads. It specifies coating thickness, supplementary chromate finishes, corrosion resistance, precautions for managing the risk of hydrogen embrittlement and hydrogen embrittlement relief for high-strength and surface-hardened fasteners. It also highlights the differences between barrel and rack plating and makes recommendations as to the applicability of each process.

1.2 The following precautionary statement pertains to the test method portion only, Section , of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

chromate finish; electrodeposited coating; fasteners; hydrogen embrittlement relief; hydrogen embrittlement testing; surface treatment; ICS Number Code 21.060.01 (Fasteners in general); 25.220.40 (Metallic coatings)

To find similar documents by ASTM Volume:

01.08 (Fasteners; Rolling Element Bearings)

To find similar documents by classification:

21.060.01 (Fasteners in general)

25.220.40 (Metallic coatings Including electrolytic depositions, cathodic coatings, autocatalytic coatings, etc.)

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