Explanation

A screw is a simple machine that is an inclined plane wrapped around a cylinder. 

It is used to fasten objects together, and it is used in:

• Fastening parts together
• Holding things in place
• Providing a secure grip

Examples include:

• Wood screws (used in woodworking and construction)
• Machine screws (used in machinery and equipment)
• Self-tapping screws (used in plastic and metal)
• Bolts (used in heavy-duty applications)
• Lag screws (used in heavy construction)
• Deck screws (used in decking and outdoor construction)
• Drywall screws (used in drywall installation)
• Anchor screws (used in concrete and masonry)