内六角头 meaning in Chinese

hexagon socket head

Hexalobular socket heat cap screw with large driving feature
大扳拧矩内六角头螺钉
Milling cutters - counterbores for hexagon socket head bolts
铣刀.内六角头螺栓用埋头孔
Counterbore for hexagon socket head bolt
内六角头螺栓埋头孔
Hexagon socket screw keys
内六角头螺丝扳手
Subland twist drills with parallel shank for clearance holes and counterbores for hexagon socket head cap screws and slotted cheese head screws
留隙孔用直柄多刃阶梯麻花钻和内六角头圆头螺钉和一

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