Bolt Nut and Washer force method: Ordinary Bolt Nut and Washer and those with reamed holes. Ordinary Bolt Nut and Washer mainly bears axial force, but also can bear less demanding lateral force. Bolt Nut and Washer used for reaming holes should be matched with the size of the hole and used when lateral force is applied.

In order to meet the need of locking after installation, some Bolt Nut and Washer have holes on the head and holes on the rod. These holes can prevent the Bolt Nut and Washer from loosening 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.