MIL-C-21657A, MILITARY SPECIFICATION: COPPER-BERYLLIUM ALLOY, LOW MAGNETIC EFFECT (FOR SPECIAL PURPOSE TOOLS AND EQUIPMENT) (25 APR 1972)

MIL-C-21657A, MILITARY SPECIFICATION: COPPER-BERYLLIUM ALLOY, LOW MAGNETIC EFFECT (FOR SPECIAL PURPOSE TOOLS AND EQUIPMENT) (25 APR 1972)., This specification covers copper-beryllium alloy for non-magnetic tools and equipment furnished in bar and rod.