What setscrew or bolt do you use in sheave or bushing?

Screws are a common fastener with many types. They can be classified according to the following aspects:

 1. **Classification by head shape**:
 - Flat head screw
 - Round head screws
 - Button head screws
 - Hexagon head screw
 - Lag screws
 - Flat head screws

 2. **Classification by thread type**:
 - Metric thread
 - Inch thread
 - Self-tapping screws (self-tapping threads)
 - Wood screws (screws designed for use with wood)

 3. **By material classification**:
 - Carbon steel screws
 - Stainless steel screws
 - Copper screws
 - Plastic screws

 4. **Classification by purpose**:
 - Machine screws (for mechanical equipment)
 - Construction screws (for building structures)
 - Furniture screws (for furniture assembly)
 - Electrical screws (for electrical equipment)

 5. **Classification by driving mode**:
 - Slotted screw
 - Phillips screws
 - Hexagon screw
 - Star screws (like Torx screws)

 6. **Classification by special functions**:
 - Anti-theft screws
 - Anti-loosening screw
 - High strength screws

 Different types of screws are suitable for different occasions and needs. Choosing the right screws can improve the stability and safety of the connection.