TT-C-490A, FEDERAL SPECIFICATION: CLEANING METHODS FOR FERROUS SURFACES AND PRETREATMENTS FOR ORGANIC COATINGS (09 DEC 1968) [INTERIM REVISION OF TT-C-490]

TT-C-490A, FEDERAL SPECIFICATION: CLEANING METHODS FOR FERROUS SURFACES AND PRETREATMENTS FOR ORGANIC COATINGS (09 DEC 1968) [INTERIM REVISION OF TT-C-490]., This specification covers the cleaning methods and pretreatment of ferrous metals for the application organic coatings (paint, varnish, lacquer, enamel, etc.) and in addition ferrous metals or items having zinc or aluminum surfaces or accessory fabricated parts of zinc or aluminum requiring treatment.