十字槽圆头机丝牙螺钉 cross recessed round head screw

一字槽圆头木螺丝 slotted round head wood screw

圆头丁字铁 Bulb Tee

十字槽圆头螺钉 The round head screws ; Cross recessed round head screws

十字头圆销 [机] crosshead pin

圆头丁字钢 bulb rail

公制圆头十字塑胶螺丝 Philip's Pan Plastic Head Screw

十字头圆销螺母 [机] crosshead pin nut ; crosshead wrist pin nut

圆形一字头螺柱 OVAL SLOT STUD