QQ-W-470B, FEDERAL SPECIFICATION: WIRE, STEEL, CARBON, SPRING, MUSIC (14-DEC-1965) [SUPERSEDING MIL-W-6101] [S/S BY ASTM A228]

QQ-W-470B, FEDERAL SPECIFICATION: WIRE, STEEL, CARBON, SPRING, MUSIC (14-DEC-1965) [SUPERSEDING MIL-W-6101] [S/S BY ASTM A228]., This specification covers one type of round, cold drawn, high carbon, steel wire with a bright smooth finish which is termed \"music spring wire\".