标准摘要 Cross Reference: AMS2645,AMS2645K,AMS5643,AMS7474,AMS7474C 展开完整摘要 英文名称BOLT, MACHINE - HEXAGON HEAD, PD SHANK, CORROSION RESISTANT STEEL (UNS S17400), 140 KSI UTS MIN, .2500-28 UNJF-3A