cap screw

基本解释

Tapping is the process of cutting a thread inside a hole so that a cap screw or bolt may be threaded into it.
攻丝是在一个孔中车出螺纹,以便装上有帽螺钉或螺栓。
To adjust the setting of the valve, loosen locking cap screw with hex wrench, see Figure 3.
如果要调节阀门的设置，则利用六角扳手松开锁紧帽螺丝，参阅图3。
Heat and unscrew all the cap screws.
将全部有头螺钉加热并拧下来。
The reader might as well imagines, under the zero gravity condition, buries the head Harbo inside, then twists more than 100 small hexagonal cap screw nail.
读者不妨想象一下，在零重力条件下，将脑袋埋进“哈勃”里面，而后拧掉100多颗小六角帽螺丝钉。
A cap screw forgets after avoid by all means opens bottle, can make otherwise alcohol composition volatilizes, also can make flavor oxidizes and deteriorate.
切忌开瓶后忘记把瓶盖扭紧，否则会令酒精成分挥发，也会令香料氧化而变质。

a screwed bolt with a cylindrical head having a hexagonal recess. The bolt is turned using a wrench of hexagonal cross section