也称为六角头螺丝或六角头螺栓。包括标准，钻孔头，左旋螺，自封式，军用规格螺栓。
Also known as Hex Head Screws or Hex Head Bolts. Includes Standard, Drilled Head, Left Hand Threaded, Self-Sealing, and Military Specification Cap Screws.
注意：如果只是维修阀瓣，就不要拆卸阀瓣固定器，只需拆卸支撑阀瓣固定器板的六角头螺丝和拆卸阀瓣即可。
NOTE: the disc holder should not be removed when servicing only the disc, remove Allen head screws holding the disc retaining plate and replace disc.
沉头内六角螺丝；
如果两者皆不的部份被穿线于门闩一定被用：这用一个六角形的头有螺丝钉。
If neither part is threaded a bolt must be used: this consists of a screw with a hexagonal head.
球头内六角扳手磨损，带螺丝很容易，所以我尽量避免使用它们。
Ball-end hex wrenches wear out and strip screws easily, so I generally avoid them.
包括低压头，半圆头及平头螺丝以及特殊内六角圆柱头螺钉如排空，钻孔头，自锁，等等。
Includes Low Head, Button Head, and Flat Head Screws, as well as special Socket Cap Screws such as Vented, Drilled Head, Self-Locking, and more.
主要生产和销售六角头螺栓、六角法兰面螺栓、双头螺栓、马车螺栓、组合螺钉、钻尾螺丝、全牙丝杆。
Produce and sell six head bolt, bolt, pairs of head bolt, carriage bolt the six flange, make screw up, get into tail screw, the whole tooth silk pole mainly.
我公司主导产品为钻尾螺丝系列(六角华司头、盘头、钮扣头、喇叭头、六角法兰头、小仔头等)，同时也生产干壁钉、纤维板钉和自攻钉等自攻类螺丝。
Our company is main products are series of drilling screws, and mean-while we also have sub production line for Drywall screw, Chipboard screw, and Tapping etc.
我公司主导产品为钻尾螺丝系列(六角华司头、盘头、钮扣头、喇叭头、六角法兰头、小仔头等)，同时也生产干壁钉、纤维板钉和自攻钉等自攻类螺丝。
Our company is main products are series of drilling screws, and mean-while we also have sub production line for Drywall screw, Chipboard screw, and Tapping etc.
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