This SAE Aerospace Recommended Practice (ARP) covers the requirements for alternative coatings used in lieu of nickel-chromium plating and the surface finish requirements for aerospace hand tools. It is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances.

Classification:

Coating covered by this document shall be of the following types, as specified:

Type I and Type II are those coatings specified in AS4984

Type III - Alternative coatings, used in lieu of nickel-chromium plating

NOTE: The contents of this document are to be included in AS4984 at a later date.