Plastic screw factory to introduce the loosening of threaded fasteners: hexagonal screws firmware how to prevent loosening?

A thread is a shape that has a uniform spiral line projection on the outer or inner surface of a solid cross-section. According to its structural characteristics and uses can be divided into three categories.

1, transmission thread: the tooth shape has trapezoidal, rectangular, saw-shaped and triangular, etc.

2、Sealing threads: Used for sealing connections, mainly pipe threads, tapered threads and tapered pipe threads.

3、General thread: The thread is triangular in shape and is used to connect or fasten parts. The common thread is divided into two kinds according to the pitch: coarse thread and fine thread, and the connection strength of fine thread is higher.

Plastic screw factory, the threaded fasteners are usually the following three methods to prevent loosening.

1、Mechanical fasteners to prevent loosening

The use of mechanical fasteners between the threaded parts and the connected parts or between the threaded parts and the threaded parts fixed and pin tight, in order to stop loosening.

The advantage of this method is the loosening of reliable, the reliability of its loosening generally depends on the static strength or fatigue strength of the mechanical fixings (or fasteners themselves, such as slotted nuts).

Its disadvantage is to increase the weight of the fastening connection, manufacturing and installation trouble, can not be mobile installation, so the cost is higher. Due to its high reliability of anti-loosening, in machinery products and aerospace products in some important parts of the still widely used.

2、Increasing the frictional force to prevent loosening

This anti-loosening method is most widely used in the mechanical manufacturing sector and the aerospace field. Use to increase the friction between the threads or bolt (screw) head and nut end face or increase the friction of both methods to achieve the purpose of anti-loosening.