... hexagon socket set screw 六角凹头固定螺钉 SOCKET SET SCREW 紧定螺丝 socket hexago screw 内六角螺钉 ...
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square-socket set-screw 内方头紧定螺钉
hexagon socket set screw 六角凹头固定螺钉
hexagonal socket set screw 六角凹头止动螺钉
socket head set screw wrench 套筒头螺丝扳手
hexagon socket headless set screw 内六角无头定位螺钉
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