单头六角直口扳手
single-end hexagon straight wrench
六角头安全固定螺钉
hexagonal safety set screw
六角头不脱出螺钉
hexagon head unloosening screw
六角头部带槽螺栓
fillister hexagon head bolt
六角头螺栓
hexagon head bolt
hexagonal head bolt
hexagon bolt
hexagon headed bolt
hexagonal bolt
hex bolt
bolt
Hexagon head bolts--Product grades A and B
六角头突缘螺栓
hexagon head bolt (screw) with collar
六角头自攻螺钉
hexagon head tapping screw
六角头自削螺钉
hexagon head self cutting screw