MIL-STD-171 Finishing Of Metal And Wood SurfacesThis standard establishes and updates general finish codes and serves as a general guide to the selection of suitable materials, procedures, and system for cleaning, plating, painting and otherwise finishing of metal and wood surfaces.

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MIL-STD-171F

5.1.4.1.1 Surface treatments for noncorrosion resistant steel. Immediately after

cleaning, solvents and moisture, if any, shall be completely removed. Unless otherwise specified on the drawing or in the contract ------, the contractor may select the method of removal. Unless otherwise specified, the surfaces shall receive one of the treatments listed in table V immediately after removal of organic and inorganic contaminates. Unless otherwise specified, high strength steel parts (Rockwell C35 or higher) shall not be cleaned, phosphated, pickled or wash primed (finish 5.2) with acid containing materials without the specific approval of the procuring activity. The design/procuring activity shall select the treatment and shall reference it on drawings, in contracts or in item specifications by the number shown in the table.

5.1.4.2 Steel corrosion-resisting. Surfaces of corrosion resisting steel shall be thoroughly cleaned and treated by one or more of the finishes listed in table V. The design/procuring activity shall select the finish and shall reference it on drawings, in contracts, or in item specifications by the number shown in the tables.

5.1.4.3 Zinc and cadmium. Surfaces of zinc and cadmium shall be cleaned by degreasing (finish 4.10) or as otherwise specified. Prior to being painted, any surface without the supplementary treatments describe in table II under finishes 1.1 or 1.9 shall be given one or more of the surface treatments in table VI. The design/procuring activity shall select the cleaning method (unless cleaning is specified in the pretreatment specification) and the finish shall be referenced on drawings, in contracts or in item specifications by the numbers shown in the tables.

TABLE VI. Surface treatments for zinc and cadmium. Finish No. Requirements

*General finish requirement headings shall not be specified. The specific finish numbers(s) only shall be specified. See page iii for the proper method of specifying finishes.

5.1.4.4 Aluminum and aluminum alloys. Surfaces of aluminum or aluminum alloys shall be cleaned by vapor-degreasing (finish 4.10), nonetching alkaline cleaner (finish 4.9) or as otherwise specified (e.g., non-metallic abrasive blasting). They shall then be given immediately one -------- of the treatments specified in table VII. The design/procuring activity shall select the cleaning method (unless cleaning is covered in the treatment specifications of table VII) and the treatment, and shall reference them on drawings, in contracts or in item specifications by the numbers shown in the tables.