Fixing and buying guide
A501009 Ulti-mate II Professional Woodscrew PoziSquare Double Csk Z&Y - (10g) 5mm X 100mm - 100
What this screw is for
This is a professional-grade woodscrew for demanding applications including structural timber fixing, heavy joinery, cabinet making, and fitting hardware where a quality finish and reliable drive are essential. The self-countersinking head and anti-camout recess make it ideal where screw heads must sit flush and driving must be precise and stable. The slotted shank reduces wood splitting, making it suitable for use near edges and in sensitive timber.
- Structural timber and heavy joinery work
- Cabinet and furniture assembly
- Hinge and fitting installation
- Applications requiring flush, professional finish
- Use where wood splitting must be minimised
Key features and compatibility
The PoziSquare recess is self-centering and works with both Phillips (PH) and Pozidriv (PZ) drivers, giving flexibility on site. The state-of-the-art anti-camout design ensures stick-fit and stable driving, preventing bit slip and screw damage. The quick start point allows rapid starting with minimum force, reducing operator fatigue and the risk of bit camout on initial engagement. The reinforced double angle head self-countersinks as it drives, eliminating the need for pre-drilling countersinks in most softwoods. No ribs on this size make it ideal for use with hinges and other fittings where a clean fit is required.
- PoziSquare recess: self-centering, anti-camout design
- Compatible with PH and PZ drivers
- Quick start point for rapid, low-force engagement
- Self-countersinking double angle head
- Slotted shank reduces wood splitting
- No ribs: suitable for hinges and fittings
- Zinc yellow plated for corrosion resistance
Sizing and pack contents
This is a 10g gauge screw, 5mm diameter and 100mm length. Use 100mm length for fixing timbers 50mm thick and above, or where you need good penetration into a second member. The 100-screw pack is suitable for professional use on medium to large projects or for stocking in a workshop. For smaller projects or trial use, check availability of smaller packs.
- Gauge: 10g (5mm diameter)
- Length: 100mm
- Pack size: 100 screws
- Suitable for timbers 50mm thick and above
Before you fix
Check timber moisture content is below 20 percent to minimise movement and splitting. For hardwoods or dense timbers, pre-drill a pilot hole slightly smaller than the screw shank to ease driving and reduce breakage risk. The quick start point and slotted shank reduce splitting in softwoods, but pilot drilling is still recommended near edges or in end grain. Ensure your driver bit is in good condition and fully seated in the PoziSquare recess to avoid camout. Use a cordless drill or impact driver at moderate speed for best control and to avoid over-driving.
- Check timber moisture content is below 20 percent
- Pre-drill pilot holes in hardwoods and dense timbers
- Pilot drill near edges and in end grain to prevent splitting
- Inspect driver bit for wear and ensure full seating in recess
- Use cordless drill or impact driver at moderate speed
- Avoid over-driving, which can strip the recess