SPAX universal screws T20 half-round head WIROX 4 mm x 30 mm 1000 pcs

Pack of 1000 SPAX universal screws T20 half-round head WIROX 4 mm x 30 mm designed for general fastening tasks in wood and composite materials. These screws feature a T20 drive and a half-round head profile that provides a low-profile finish while allowing secure bit engagement. The WIROX coating offers corrosion resistance suitable for indoor and some sheltered outdoor applications. The consistent thread geometry ensures reliable bite and pull-out resistance across a range of timber and panel substrates.

Advantages

The combination of a T20 drive and precision thread reduces cam-out and speeds up installation with powered drivers. The half-round head gives a neat visible finish and distributes clamping force over a larger surface compared to countersunk types. WIROX surface treatment increases resistance to rust and wear without significantly altering screw dimensions. Supplied in a bulk pack of 1000 pieces, the set supports larger projects and reduces the need for frequent restocking.

Suitable for

• General woodworking and carpentry fastening
• Assembly of composite boards and panels
• Interior trim and molding installation
• DIY projects and small construction jobs

Key specifications

• Head type: half-round (raised) head
• Drive type: T20 (torx)
• Diameter: 4 mm
• Length: 30 mm
• Finish: WIROX corrosion-resistant coating
• Quantity: 1000 pieces per pack
• Material: hardened steel (standard for universal wood screws)

How to use

Select an appropriate T20 bit in good condition and use a drill-driver or impact driver with adjustable torque. For hardwoods or dense composite materials, consider pre-drilling a pilot hole to reduce splitting; for softer woods the screw may be driven directly. Drive the screw until the half-round head rests on the surface with firm clamp, avoiding over-torquing which can strip the drive or damage the material. For repetitive work, use a magnetic bit holder or bit extension to improve handling and speed.

Usage recommendations

Store the screws in a dry environment to preserve the WIROX coating. For prolonged outdoor exposure or direct contact with chemically treated timber, verify that the WIROX finish meets the required corrosion class; where higher corrosion resistance is needed, select fasteners specified for exterior use. Wear appropriate eye protection when driving screws and follow standard safety practices for power tools.