QQ-S-637A (NOTICE 1), FEDERAL SPECIFICATION: STEEL BAR, CARBON, COLD FINISHED (STANDARD QUALITY, FREE MACHINING) (01 MAY 1980) [S/S BY ASTM A108]

QQ-S-637A (NOTICE 1), FEDERAL SPECIFICATION: STEEL BAR, CARBON, COLD FINISHED (STANDARD QUALITY, FREE MACHINING) (01 MAY 1980) [S/S BY ASTM A108]. Federal Specification QQ-S-637A, dated May 20, 1970, is hereby canceled. ASTM A108 may be used in lieu of this specification.