Knowledge

This is because of its unique structure. There is a 30 degree wedge bevel at the bottom of the female thread. When the bolts and nuts are tightened to each other, the tip of the bolt is tightly placed

The first is to use two identical nuts to screw on the same bolt, and a tightening torque is added between the two nuts to make the bolt connection reliable. The second type is a special locknut that

The working principle of the nut is self-locking by the friction between the nut and the bolt. However, the reliability of this self-locking in dynamic loads is reduced. In some important cases, we wi

Square head bolts Class C refers to fasteners that are connected to each other by a head and a screw. They need to be used with a nut. The grade of the square head bolt is Class C. Square head bolts a

The cross countersunk head screw has high quality characteristics such as insulation, non-magnetic, corrosion resistance, beautiful appearance and never rust. The modified engineering plastics have th

PP (polypropylene) is a crystalline resin and is a representative general-purpose plastic. With a specific gravity of 0.9, it is the lightest in general-purpose plastics, and has excellent chemical re

The cross countersunk head screw is suitable for the case where the nail head is not allowed to be exposed, but the corresponding tapered counterbore must be formed on the surface of the part with the

A single-head bolt, a type of fastener consisting of a head and a screw (a cylinder with an external thread), is required to be fitted with a nut for fastening two parts with through holes. This type

The disc spring washer, also known as the Belleville spring washer, was invented by the Frenchman Belleville. The DIN6796 disc spring washer (HDS series) is a lock washer designed for bolt and screw c

1. The spring washer has a dilatation phenomenon, which is generally not a problem with the spring washer itself. 2. The spring washer in which the expansion ring occurs is inevitably subjected to a r

The flat pad is only to increase the contact area, and the spring pad can be loosened. For example, the bolt connecting the motor and the base is generally spring-loaded. Because the motor vibrates wi

A spring washer assembly is placed under the nut to prevent loosening of the nut. It is stated in national standards. The hexagonal slotted nut is designed to be used with a bolt with a hole at the en