【1】 High strength bolts can be galvanized, which is a very economical and effective anti-corrosion to bolt structure and prevent oxidation.

【2】螺栓：螺栓：由頭部和螺桿（帶有外螺紋的圓柱體）兩部分組成的一類緊固件，需與螺母配合，用于緊固連接兩個(gè)帶有通孔的零件。 這種連接形式稱螺栓連接。如把螺母從螺栓上旋下，又可以使這兩個(gè)零件分開，故螺栓連接是屬于可拆卸連接。其中六角頭是更常用的，一般沉頭用在要求連接的地方。

【2】 Bolt: Bolt: a kind of fastener composed of head and screw (cylinder with external thread), which needs to be matched with nut to fasten and connect two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection belongs to removable connection. Hexagon head is the most commonly used, and generally countersunk head is used where connection is required.

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