Digital fingerprint lock makes up for the shortcomings of short-board brand promotion
Fasteners, also known as standard parts in the market, are is used to fasten two or more parts to join two or more parts into a whole A general term for a class of mechanical parts.
Other Fastener and fittings,Locking Hitch Pin,Tumbler Lock,Solid Rivets,Ball Lock Pin Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.comThe head and the Screw (cylinder with external thread) are two parts of a class of fasteners that need to be fitted with a nut to fasten two parts with through holes. This form of connection is called Bolt connection. If the nut is screwed off from the bolt, and the two parts can be separated, so the bolt connection is a removable connection.