标准摘要 Cross Reference: AMS5731,ANSI Y14.5M,AS7477,ASME B46.1,ASME Y14.36M,ASTME1417 展开完整摘要 英文名称BOLT, MACHINE - HEXAGON HEAD, DRILLED 6 HOLES, PD SHANK, CRES (UNS S66286), .5000-20 UNJF-3A