All About Screws

Our chipboard Screws are suitable for all types of wood, hard, soft and man-made.

They are case hardened for strength.

Corrosion resistant.

Pilot hole not required due to starter thread as standard.

Compatible with Phillips 2 Drivers.

Useful Information

Case Hardening - The outer surface of the screw is processed to produce a tough outer coating that improves it's strength.  The whole screw is not hardened as this would cause it to be brittle and snap.

Shank - The unthreaded section below the head. Often found on longer length screws, this helps prevent soft wood from splitting and prevents timber jacking.

Thread Types - The spiralled metal around the core. This must be angled to ease driving and also provides strength.

Threads can be - Single: good on soft wood.  Twin: Ensures speed and direction.  Dual: Combines both the best features of the former.

Core - This is the main body of the screw, it gives it strength.

Countersunk - Lies flush or just below the surface.

Roundhead - Rounded top which sit proud of the surface.

Raised Head - Slightly rounded top which sits partly recessed.

Pan Head - Shallow roundhead often used in electrical fixings.

Bugle Head - Sides of head are curved and will lie flush with the surface.