标准摘要 Cross Reference: AMS2645,AMS5731,AMS7477,ANSI/ASME/B46.1,ANSI/Y14.5,AS478,MIL-S-8879 展开完整摘要 英文名称BOLT, MACHINE - HEXAGON HEAD, DRILLED 6 HOLES, PD SHANK, CRES UNS S66286, .2500-28 UNJF-3A