Fixing and buying guide
ST400708 Ulti-mate II Professional Woodscrew PoziSquare Double Csk Z&Y - (8g) 4mm X 70mm - 600 Tub
What this product is for
The Ulti-Mate II is a multi-purpose woodscrew suitable for fixing into hardwoods, softwoods, and engineered timber boards. It performs equally well in MDF, plywood, chipboard and OSB, making it ideal for general carpentry, joinery, and sheet material assembly. The screw can also be used for light sheet metal applications. The double countersunk (csk) head sits flush with the surface, providing a neat finish suitable for visible work.
- Hardwood and softwood fixing
- Man-made boards: MDF, plywood, chipboard, OSB
- Sheet metal applications
- Flush-finish countersunk head
Sizing and pack contents
This screw is 8 gauge (8g) with a length of 70mm, making it suitable for fixing materials of moderate thickness or where good penetration into the substrate is required. The 600-screw tub provides a substantial quantity for trade and larger DIY projects. A high-quality Stick-Fit driver bit is included in every box, eliminating the need to source a compatible bit separately.
- Size: 8g x 70mm
- Pack quantity: 600 screws
- Includes Stick-Fit driver bit
- PoziSquare recess type
Installation and performance
The sharp point and prominent thread at the tip allow for rapid start and immediate thread engagement, reducing driving time and effort. The patented PSD recess and Stick-Fit connection enable one-handed driving, as the screw remains attached to the bit during installation. This design saves time on site and reduces fatigue during high-volume fastening work. The zinc and yellow passivated finish (Z&Y) provides corrosion resistance suitable for most interior and protected exterior applications.
- Sharp point for rapid start and immediate engagement
- Stick-Fit connection for one-handed driving
- Zinc and yellow passivated finish for corrosion resistance
- Reduces driving time compared to standard screws
Pre-installation checks
Before use, ensure the material you are fastening is suitable for screw fixing and that the 70mm length provides adequate penetration into your substrate without breaking through the reverse face. Check that the Stick-Fit driver bit supplied is in good condition and compatible with your drill or driver. For sheet metal applications, verify that the gauge and length are appropriate for the thickness of metal being fixed. Store the tub in a dry environment to maintain the finish quality.
- Verify substrate suitability and thickness
- Check driver bit condition before use
- Confirm 70mm length is appropriate for your application
- Store in dry conditions