Bolt

Main classification of bolts

According to the stress mode of connection

Common and reamed. The ordinary ones mainly bear the axial force, but also can bear the lateral force with low requirements. The bolt used for reaming shall match the size of the hole and be used when subjected to transverse force.

The mold manufacturer shall divide it according to the head shape

There are hexagon head, round head, square head, countersunk head and so on. Hexagonal head is commonly used. General countersunk head is used for required connection

The back surface is smooth without protrusion, because the countersunk head can be screwed into the part. Round heads can also be screwed into parts. The tightening force of square head can be larger, but the size is large.

In addition, in order to meet the needs of locking after installation, if there are holes in the head and in the rod, these holes can prevent the bolts from loosening when they are subjected to vibration.

The polished rod without thread of some bolts should be made thin, which is called thin waist bolt. This kind of bolt is favorable for connection under variable force.

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

In addition, there are special uses: for T-shaped slot bolts, there are many Z used on machine tool clamps, with special shapes, and the two sides of the head should be cut off. The anchor bolts, which are used to connect and fix the machine and the ground, have many shapes. U-bolt, as previously described. wait.

There are also special studs for welding. One end has a thread and the other end has no thread. They can be welded to the parts, and the other side directly screws the nuts.

Riding bolt

The English name of the riding bolt is U-bolt. It is a non-standard part, and its shape is U-shaped, so it is also called U-bolt. There are threads on both ends that can be combined with the nut. It is mainly used to fix tubular objects such as water pipes or sheet objects such as the leaf spring of cars. Because the way of fixing objects is like people riding on horses, it is called riding bolt.