SPAX universal screws T20 half-round head WIROX 5 mm x 20 mm 1000 pcs

Pack of 1000 SPAX universal screws with a T20 drive and half-round head, 5 mm diameter and 20 mm length. The WIROX surface finish provides corrosion resistance suitable for many indoor and outdoor fastening tasks. These universal screws are intended for reliable connection of wood components and general construction applications where a standard T20 bit is used for installation.

Advantages

SPAX universal screws combine a universal thread geometry and a half-round head for a secure hold and a visible head finish. The T20 drive reduces cam-out and allows consistent torque transfer when using cordless drivers or screwguns. WIROX coating delivers enhanced corrosion protection compared to untreated steel and helps extend service life in humid or sheltered exterior environments. Supplied in a bulk pack of 1000 pieces, the set is suitable for multiple projects and reduces the need for frequent reordering.

Suitable for

• Fastening wooden boards, battens and trim
• General carpentry and joinery work
• Interior fittings and fixtures
• Non-structural exterior applications where WIROX corrosion protection is adequate
• Repeat production or assembly tasks requiring large screw quantities

Key specifications

• Drive type: T20
• Head style: half-round head
• Material finish: WIROX corrosion-resistant coating
• Nominal diameter: 5 mm
• Length: 20 mm
• Quantity: 1000 pieces per pack

How to use

Select a T20 bit and a suitable driver with adjustable torque. Pre-drill pilot holes when working near edges, with hardwoods, or when reducing splitting is critical. Set the driver torque to avoid over-driving the half-round head; drive the screw until the head sits flush or slightly raised depending on the application. For repeated assembly, keep spare bits and inspect screws visually for coating damage before use.

Usage recommendations

For outdoor exposed applications in aggressive environments consider using stainless steel or specially certified exterior fasteners. Store the pack in a dry place to maintain the WIROX finish and avoid prolonged contact with moisture before installation.