紧固件 FASTENERS
德制四方螺帽 DIN STANDARD SQUARE NUTS
德制六角螺帽 DIN
STANDARD HEXAGONAL NUTS（Finish mg）
美制六角螺帽 AMERICAN STANDARD FINISHED HEXAGONAL
NUTS
美制机螺钉用方螺帽 AMERICAN STANDARD SQUARE MACHINE SCREW NUTS
美制机螺钉用六角螺帽
AMERICAN STANDARD HEXAGONAL MACHINE SCREW
美制重型六角螺帽 AMERICAN STANDARD HEAVY
HEXAGONAL NUTS
德制六角头螺钉 DIN 558 HEXAGONAL SCREWS
德制六角头螺拴 DIN 601 HEXAGONAL
BOLTS
德制六角头螺拴 DIN 931 HEXAGONAL BOLTS
德制六角头螺钉 DIN 933 HEXAGONAL SCREWS
美制六角头螺栓 AMERICAN STANDARD HEXAGONAL BOLTS
美制六角头螺钉 AMERICAN STANDARD HEXAGONAL
CAP SCRWS
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