标准摘要 Cross Reference: AMS2645,AMS2645K,AMS5731,ANSI/ASME/B46.1,ANSI/B4.2,ANSI/Y14.36,ANSI/Y14.5M,AS1370,AS478,AS478J,MA3374,UNSS66286 展开完整摘要 英文名称BOLT, MACHINE-HEX HEAD-DRILLED, PD SHANK, LONG THREAD, AMS5731, METRIC