Classification of fasteners
Time：2022/5/17 Browse：1999
Bolt: a kind of fastener composed of head and screw (cylinder with external thread), which is usually matched with nut or screw hole to connect two objects with through hole or screw hole;
Stud: a kind of fastener with no head and only external threads at both ends;
Screw: it is also a kind of fastener composed of head and screw. It is usually divided into: mechanical screw, set screw and special purpose screw;
Nut: with internal thread hole, the shape is generally flat hexagonal column or cylindrical. It is used to connect two objects together with studs and bolts to make them a whole.
Self tapping screw: this kind of screw has high hardness and can be directly screwed into the component.
Pin and key: mainly used for part positioning, part connection, fixing parts and transmitting power.
Flat Washer: divided into: flat circular ring and elastic washer
Retaining ring: for installation in the shaft groove or hole groove of machine and equipment, so that the two parts will not move axially;
Rivet: a kind of fastener composed of head and nail rod;
Assembly and connecting pair: assembly refers to a kind of fastener supplied in combination. Connecting pair refers to a group of parts supplied by a combination of special bolts, nuts and washers.
