Product Name: Hardened Carbon Steel Adjustable Handle Screw
Hardened Carbon Steel Adjustable Handle Screws Are Mainly Used To Connect The Handle To Other Components And Can Adjust The Handle Position. The Specific Uses And Advantages Are As Follows:

### Use
- **Industrial Equipment**: In Various Industrial Machinery Such As Machine Tools, Production Line Equipment, Etc., It Is Used To Connect The Operating Handles. The Handle Position Can Be Adjusted As Needed To Facilitate Workers' Operation.
- **Furniture Field**: In Office Desks And Chairs, Adjustable Furniture And Other Products, Connect And Adjust Handles, Such As Adjusting The Lifting Handles Of Office Chairs, Angle Adjustment Handles, Etc.
- **Tools And Equipment**: The Handles Of Screwdrivers, Wrenches And Other Tools Are Sometimes Used To Facilitate The Adjustment Of The Grip Angle To Suit Different Working Scenarios.

### Advantage
- **Rust And Durable**: Hardened Carbon Steel Has High Strength And Hardness, Can Withstand Large External Forces And Torque, Is Not Easy To Deform Or Break, And Can Ensure Long-Term Use.
- **Accurate Adjustment**: It Can Realize Precise Adjustment Of The Handle Position, Meet The Personalized Needs Of Different Users For Operating Angles And Positions, And Improve Operation Comfort And Accuracy.
- **Wide Adaptability To The Environment**: After Treatment, It Has Certain Corrosion Resistance, Can Maintain Stable Performance Under Various Environmental Conditions, Is Not Easy To Rust, And Ensure The Function Of Use.
- **Convenient Installation**: The Installation And Disassembly Process Is Relatively Simple, And Can Be Operated With Ordinary Tools, Which Facilitates The Adjustment Or Replacement Of The Handle During Equipment Maintenance And Repair.