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STUD, STEPPED, 2.5 DIA ENGAGEMENT, PD SHANK, AMS5731, .5625-18 UNJF-3A X .500-20 UNJF-3A