Fashionable Spax Wirox Washer Head Torx Wood Construction Screws

Great Fixing For Woodworking Attachment of counter-battens and wood based panels (e.g. suction-proof fastening of roof battens)

Considerably reduced screwing-in torque and reduced splitting effect
Length specification and manufacturer logo on the head
Higher head traction forces than countersunk head screws

Approved by building authorities
Under licensing number Z-9.1-449. Z-9.1-511
Approved by building authorities for fastening rooftop insulation systems

Special properties
Wide overlying washer head Washer head
WIROX P3J: The surface with extremely high protection against corrosion
SPAX 4CUT cutter (For screw lengths of 160 mm and larger): significantly reduces the screwing in torque
Partial thread: firm tightening of the upper wood layer
SPAX T-STAR plus: secure bit grip, no cam-out effect, optimal force transmission

Application
The non-threaded part must completely reach through the upper component. The washer head then pulls the upper component tighter to the lower component with each thread rotation.
Advantages of a washer head compared to a countersunk head:
Better tightening of connections also of warped board. Washer head guarantees double the amount of power delivery.

Features & Benefits
Features
SPAX 4CUT point: allows screwing in without pre-drilling (wood-dependent), reduces splitting as square end displaces the fibres
SPAX ground serrations: up to the point – quick and secure fastening