A general term for a class of mechanical parts used to securely connect two or more parts (or components) into a whole. The fasteners are a type of mechanical parts that are used for fastening connections and are widely used. All kinds of fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters and daily necessities. It can be seen that fasteners involve a wide range of industries. Taking the electronics industry as an example, RICHCO fasteners with international influence can be said to be the leading manufacturer of fasteners in the global electronics industry.
Bolt - a type of fastener consisting of a head and a screw (a cylindrical body with external threads), which needs to be matched with a nut for the fastener to connect two parts with through holes.
Stud - A type of fastener that has no head and only has external threads on both ends.
Screws - also a type of fastener consisting of a head and a screw rod, can be divided into three categories according to their use: machine screws, set screws and special-purpose screws.
Nut - with internally threaded holes, generally in the shape of a flat hexagonal column, also in the shape of a flat square column or a flat cylinder, with bolts, studs or machine screws, used for fasteners to connect two parts, making it a whole.
There are also self-tapping screws, wood screws, washers, retaining rings, pins, rivets, expansion bolts, assemblies, etc.