The utility model has the advantages of theft prevention, convenient use, reliability and low cost, and can replace the dirt removing plug screw of the exiting oil tank.
本实用新型具有防盗、使用方便、可靠、成本低等优点，能取代现有的油箱排污螺塞。
The utility model relates to a jack screw and plug screw driver, which is characterized in that a hole is drilled along an axial direction in a screw, and a plug is added on the head of a screwdriver.
一种插孔螺钉及插头螺丝刀。它是在螺钉上沿轴向钻了一个孔，在螺丝刀头部加了一个插头。
Motion and force of the solid plug in the solid conveying zone were analyzed deeply in the two equivalent cases of the inner screw.
在固体输送段对内螺杆的两种等效情况下固体塞的运动和受力作了深入分析。
Will link directly into the screw plastic pin plug twist the hole, pin plug stress, and wall body firmly with inflation.
将螺钉连结工件直接拧入塑料销塞的孔内，销塞受力膨胀，与墙体牢固结合。
After the adhesive is solidified, the pipe and the pipe joint body are screwed into a whole through the screw plug.
待粘接剂固化后，管子、管接头体通过螺丝堵头凝接成一个整体。
Fixing mode: the fixing mode of plug-in part is adopted, and screw mode is not used.
固定方式：采用插接件固定方式，不得用螺钉方式。
The utility model has simple structure, and the decorative cover is interchangeable with the blank cap or the screw plug, which simplifies operation and use.
本实用新型结构简单，装饰盖与闷盖或丝堵具有互换性，操作使用简便易行。
Just a few spare parts shall be replaced by the user. In addition, the machine shall also seal aluminum security plug, three screw cap and crown cap.
用户只需更换极少零部件，还可实现对铝质防盗盖、三旋盖、皇冠盖的封口。
Just a few spare parts shall be replaced by the user. In addition, the machine shall also seal aluminum security plug, three screw cap and crown cap.
用户只需更换极少零部件，还可实现对铝质防盗盖、三旋盖、皇冠盖的封口。
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