Can you distinguish between bolts and screws?

In the field of fasteners, bolts and screws are the most commonly used because they are both composed of screws and heads, and the head shape is basically the same, so they are often confused.

Here, we will systematically explain the differences between bolts and screws from six perspectives: definition, structure, application, assembly tools, tightening methods, and usage scenarios.

definition

A bolt refers to a cylindrical threaded fastener that is paired with a nut during use. Its connection form is called a bolt connection, mainly used to connect two parts with through holes.

Screw is also commonly referred to as screw (screw is actually a general term for Threaded fastener, and bolt is also a screw). It is a tool that uses the circular rotation and friction of the inclined plane of an object to fasten objects and workpieces in a circular and progressive manner.

structure

The structure of bolts and screws is composed of a head and a screw, and there are many types of head shapes. However, there are many hexagonal heads of bolts, which are generally larger in size. Moreover, the head of the bolt may not have grooves, and the screw is strictly cylindrical, mainly for the convenience of assembling the nut;

The heads of screws are mostly equipped with grooves or hexagonal sockets, internal torx, etc. for fastening, and their screws are not only cylindrical, but also conical, pointed, and so on.