Nuts are fasteners used in conjunction with bolts or screws, primarily relying on internal threads to engage with the external threads of bolts or screws to form a connection. Depending on their purpose and design, nuts can be classified into the following types, each with its unique function:

1. Hex Nut

Function: The hex nut is the most common type of nut, typically used in general mechanical structures. Its hexagonal design allows for easy grip and tightening with tools, providing strong fastening.

2. Flange Nut

Function: A flange nut has a flange at the bottom, similar to a washer, which increases the contact area and reduces pressure on the surface being fastened. It also has anti-loosening properties.

3. Lock Nut

Function: Lock nuts are designed to prevent loosening. Common types include nylon lock nuts and metal lock nuts. Nylon lock nuts rely on friction between the threads and a nylon insert, while metal lock nuts use deformation to prevent loosening.

4. Wing Nut

Function: Wing nuts are designed for hand tightening or loosening without the need for tools, making them ideal for applications requiring frequent assembly and disassembly.

5. Square Nut

Function: Square nuts have four sides, providing a larger contact surface and greater resistance to slipping. They are commonly used in machinery, especially under high stress.

6. Cap Nut

Function: Cap nuts have a closed top that protects the exposed threads of the bolt from corrosion or damage while also providing a more aesthetically pleasing appearance.

7. Weld Nut

Function: Weld nuts have projections or holes at the bottom to allow for welding onto metal plates, used in applications where the nut is intended to be permanently fixed.

8. Round Nut

Function: Round nuts have a circular shape and slots or holes on the side for tightening or loosening with special tools. They are often used in shafts and precision instruments.

9. Slotted Nut

Function: Slotted nuts have grooves on the top and are typically used with cotter pins to prevent loosening under heavy vibration. They are commonly used in vehicle and machinery axle connections.

10. Tee Nut

Function: Tee nuts are primarily used in wood or soft materials. Their pronged design anchors the nut into the material, providing a firm hold.

Each type of nut is designed according to its environment and specific needs to ensure a safe and stable threaded connection.

www.handanguocheng.com