SPAX Universal screws, countersunk head T20, WIROX, 4.5×30 mm, 1000 pcs

Box of 1000 SPAX Universal screws with countersunk head and T20 drive in WIROX finish, size 4.5 × 30 mm. These universal wood screws are designed for general woodworking, joinery and mounting tasks where a flush countersunk finish and secure thread engagement are required. The WIROX surface provides corrosion resistance suitable for interior use and protected exterior applications, while the T20 TORX drive reduces cam-out and allows higher torque transfer compared with standard Phillips drives.

Advantages

The universal thread profile enables fast penetration into soft and hard woods as well as many composite materials without pre-drilling in most applications. The countersunk head ensures a neat, flush surface after installation and improves load distribution under the screw head. The TORX T20 drive minimizes slippage and wear on the screw head, making assembly quicker and more consistent. The WIROX coating increases resistance to corrosion compared with plain zinc-plated screws, extending service life in typical indoor and semi-protected outdoor conditions.

Suitable for

• General woodworking and carpentry assemblies
• Interior joinery, cabinets and furniture mounting
• Fixing trims, frames and fittings to wood or composite substrates
• Trade projects and large-volume installation work

Key specifications

• Head type: countersunk, suitable for concealed finish
• Drive type: TORX T20 for reduced cam-out and higher torque
• Diameter × length: 4.5 × 30 mm
• Finish: WIROX corrosion-resistant coating
• Thread: universal thread profile for wood and composite materials
• Pack size: 1000 pieces in a trade pack

How to use

Select the appropriate screw length so the threaded portion fully engages the substrate without protruding. For clean, precise results, use a TORX T20 driver bit in a manual or powered screwdriver with adjustable torque; set torque to avoid over-tightening and crushing the wood. Where splitting is a risk (thin edges, hardwoods), consider pilot drilling. Drive screws until the countersunk head sits flush with the surface or slightly below if a plug or filler will be used. Remove debris from holes and surfaces after installation to maintain the finish.

Usage recommendations

Store unused screws in a dry place to preserve the WIROX finish. For permanent outdoor exposure or marine applications, select stainless or specifically rated exterior fasteners instead of WIROX-coated screws. When working with treated timber, confirm compatibility of coating and follow manufacturer guidance on fastener selection and spacing.