Fixing and buying guide
A601303 Ulti-mate II Professional Woodscrew PoziSquare Double Csk Z&Y - (12g) 6mm X 130mm - 50
Who this product is for
This screw is engineered for professional carpenters, joiners, and experienced DIY users undertaking structural timber work, heavy-duty joinery, and applications where screw breakage or camout cannot be tolerated. The PoziSquare recess and anti-camout design make it ideal for power driving at speed without stripping the recess. The no-rib design on this size makes it particularly suitable for use with hinges, fittings, and applications where a clean fit is essential.
- Professional and trade users
- Structural timber and joinery work
- Applications using hinges and hardware fittings
- Users with cordless drill drivers
Sizing and compatibility
At 6mm diameter and 130mm length, this screw is suitable for fastening timber sections 50mm thick and above, or for applications requiring deep penetration into hardwoods. The quick start point allows rapid starting with minimum force, reducing the risk of bit slip and damage to surrounding timber. The PoziSquare recess accepts both PH (Phillips) and PZ (Pozidriv) drivers, though a PZ driver will provide superior engagement and reduce camout risk.
- Diameter: 12 gauge (6mm)
- Length: 130mm — suitable for thick timber and deep fastening
- Works with PH and PZ drivers; PZ recommended
- Quick start point for rapid engagement
Pre-installation checks and preparation
Before driving, ensure timber is dry and free from splits or defects along the intended screw line. The slotted shank design reduces splitting, but pre-drilling is recommended in hardwoods or near timber edges. The reinforced double angle head self-countersinks, so no countersinking tool is needed — simply drive until the head sits flush with the timber surface. Ensure your driver bit is clean and in good condition to maintain PoziSquare recess engagement.
- Check timber is dry and sound
- Pre-drill in hardwoods or near edges to prevent splitting
- Use a clean, undamaged PZ driver bit for best results
- No separate countersinking required — head self-countersinks
Pack contents and corrosion resistance
This pack contains 50 screws, sufficient for most joinery and structural applications. All screws are zinc yellow plated for corrosion resistance, making them suitable for interior work and protected exterior applications. The zinc yellow finish provides a warm, professional appearance and protects against rust in normal UK conditions.
- Pack quantity: 50 screws
- Zinc yellow plating for corrosion resistance
- Suitable for interior and protected exterior use