MS9580D, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, SILVER PLATED, .5625-18 UNJF-3A (30 SEP 1989) [NO SUPERSEDING DOCUMENT].
MS9580D, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, SILVER PLATED, .5625-18 UNJF-3A (30 SEP 1989) [NO SUPERSEDING DOCUMENT].