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Bolt's profile

Bolts, machine parts, equipped with a cylindrical threaded fasteners nuts. Bolt: the head and the screw (cylinder with external thread) consists of two parts of a fastener, need to tie in with the nut, used for fastening two through-hole parts. This form of connection bolts. Unscrewed the nuts from the bolts and separate the two parts, therefore, bolt belonged to removable connections.