Bolt Main Classification

Ordinary and with reaming holes. Ordinary main load bearing axial force can also carry less demanding lateral force. The bolts used for reaming holes should be matched with the size of the holes and used when the lateral force is applied.

According to the shape of the head

There are hexagon head, round head, square head, countersunk head and so on. Among them, hex head is the most commonly used. Generally, the countersunk head is used in the place where the surface is smooth and not protruded after the connection, because the countersunk head can be screwed into the part. The round head can also be screwed into the part. The tightening force of the square head can be larger, but the size is large.

In addition, in order to meet the need for locking after installation, there are holes in the head and holes in the rod. These holes can prevent the bolt from loosening when subjected to vibration.

Some polished rods with no thread need to be thin, called thin waist bolts. This kind of bolt is beneficial to the coupling with variable force.

There are special high-strength bolts on the steel structure, the head will be bigger and the size will also change.

In addition, there are special uses: T-groove bolts, which are used most on machine tool fixtures, have special shapes, and both sides of the head should be cut off. Anchor bolts are used to connect the machine to the ground and have many shapes. U-bolt, as mentioned above. and many more.

There are also special studs for welding, with thread on one end and no thread on the other end, which can be welded on the part, and the nut is directly screwed on the other side.

Riding bolt

The English name of the riding bolt is U-bolt, which is a non-standard part, and the shape is U-shaped, so it is also called U-shaped bolt. Springs are called riding bolts because they fix objects in the same way as people ride on horses.