TT-P-615D, FEDERAL SPECIFICATION, PRIMER COATING: BASIC LEAD CHROMATE READY MIXED (23 JAN 1967)

TT-P-615D, FEDERAL SPECIFICATION, PRIMER COATING: BASIC LEAD CHROMATE READY MIXED (23 JAN 1967)., This specification covers basic lead silicon chromate base, ready-mixed for use on iron and steel surfaces.