The fasteners used in auto parts mainly include the following:

1. Bolts and nuts: used to connect important parts such as the body and chassis, such as the engine and chassis suspension system.

2. Screws and studs: Used to fix smaller parts and accessories, such as instrument panels, door handles, etc.

3. Threaded pins and pins: used to connect rotating parts, such as wheels and bearings.

4. Thread repair and thread patch: used to repair or reinforce damaged thread holes.

5. Springs and washers: used to provide elastic and cushioning functions of fasteners, such as torque springs and washers.

6. Bolt sleeve, stud sleeve and thread sleeve: used to repair or reinforce damaged thread holes.

7. Screw plug and screw cap: used to plug threaded holes to prevent liquid or gas leakage.

8. Locking nut and locking bolt: used to provide additional fastening force to prevent loosening or falling off.

9. Nut gasket: used to increase the contact area between the fastener and the workpiece to improve the fastening effect.

The above are only common auto parts fasteners, different models and purposes of the car may use different fasteners.