Types of Screws and Their Uses
Screws are grouped by what they fix: self drilling and roofing screws for steel, self tapping and machine screws for sheet metal and tapped holes, wood, chipboard and drywall screws for timber and board, and concrete screws for masonry.
Screws for steel and sheet metal
- Self drilling screws drill their own hole
- Roofing screws with rubber washers for sheets
- Self tapping screws for pre-drilled sheet metal
Screws for tapped holes
- Machine screws for panels and instruments
- Sems screws with captive washers
- Grub screws for locking parts on shafts
Screws for wood and board
- Wood screws for timber
- Chipboard and confirmat screws for furniture
- Drywall screws for gypsum partitions
Screws for masonry and security
- Concrete screws that tap into concrete
- Security screws with tamper-proof drives
