Common shapes of Bolt Nut and Washer: Generally, the countersunk Bolt Nut and Washer is used in the place where the surface after connection is required to be smooth and without protrusions, 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 of locking after installation, there are holes on the head and holes on the rod. These holes can make the Bolt Nut and Washer not loose when subjected to vibration. Some Bolt Nut and Washer do not have threaded polished rods, which are called thin waist Bolt Nut and Washer. This Bolt Nut and Washer is conducive to the connection of variable forces. There is a special high-strength Bolt Nut and Washer on the steel structure, the head will be larger and the size will also change. In addition, there are special uses: T-slot Bolt Nut and Washer, the most used on machine tool fixtures, special shape, and both sides of the head should be cut off. Bolt Nut and Washer, used to connect and fix the machine and the ground. There are many shapes. U-shaped Bolt Nut and Washer, as mentioned above. and many more. There are also special studs for welding. One end has a thread and the other is not. It can be welded to the part, and the nut is directly screwed on the other side.
