MIL-C-490A, MILITARY SPECIFICATION: CLEANING AND PREPARATION OF FERROUS AND ZINC COATED SURFACES FOR ORGANIC PROTECTIVE COATINGS (07 MAY 1954) [SUPERSEDES JAN-C-490] [S/S BY TT-C-490]

MIL-C-490A, MILITARY SPECIFICATION: CLEANING AND PREPARATION OF FERROUS AND ZINC COATED SURFACES FOR ORGANIC PROTECTIVE COATINGS (07 MAY 1954) [SUPERSEDES JAN-C-490] [S/S BY TT-C-490]., This specification covers the cleaning and preparation of iron, steel and zinc coated steal for the application of organic coatings (paint, varnish, lacquer, enamel, etc.). When specified or approved this specification may be used on fabricated items which posses some zinc and aluminum surfaces requiring treatment, in addition to the ferrous surfaces.