Screws & Fasteners

Common Types of Screws:

1. Wood Screws:

   • Designed specifically for joining wooden materials.
   • Typically have a coarse thread for better grip in wood.

2. Machine Screws:

   • Used with nuts or tapped holes, suitable for metal and plastic applications.
   • Available in various head styles and lengths.

3. Sheet Metal Screws:

   • Designed for fastening metal sheets together.
   • Feature sharp threads for cutting into metal.

4. Self-Tapping Screws:

   • Can create their own hole as they are driven into the material.
   • Ideal for applications where pre-drilling is not feasible.

5. Lag Screws:

   • Heavy-duty screws used for fastening large wooden structures.
   • Require a pre-drilled hole and are typically used with a washer.

Common Types of Fasteners:

1. Nuts and Bolts:

   • Used in conjunction to create strong connections, especially in metal applications.
   • Available in various grades and sizes for different load requirements.

2. Anchors:

   • Used to secure objects to walls or ceilings, especially in masonry or concrete.
   • Types include expansion anchors, toggle bolts, and concrete screws.

3. Rivets:

   • Permanent fasteners used to join two or more materials.
   • Commonly used in metal construction and aircraft manufacturing.

4. Washers:

   • Used in conjunction with screws and bolts to distribute load and prevent damage to surfaces.
   • Available in flat, lock, and spring types.