QQ-W-428B, FEDERAL SPECIFICATION: WIRE, STEEL, CARBON (HIGH CARBON, ROUND, FOR MECHANICAL SPRINGS, GENERAL PURPOSE) (01-OCT-1971) [SUPERSEDING QQ-W-474] [S/S BY SAE-AMS-QQ-W-428]

QQ-W-428B, FEDERAL SPECIFICATION: WIRE, STEEL, CARBON (HIGH CARBON, ROUND, FOR MECHANICAL SPRINGS, GENERAL PURPOSE) (01-OCT-1971) [SUPERSEDING QQ-W-474] [S/S BY SAE-AMS-QQ-W-428]., This specification covers uncoated, round, high-carbon steel wire for the fabrication of mechanical springs and wire forms for general purpose usage.