Fixing and buying guide
T400302 Ulti-mate II Professional Woodscrew PoziSquare Double Csk Z&Y - (8g) 4mm X 30mm - 1000 Tub
What this product is for
These woodscrews are engineered for fixing hardwoods, softwoods, and man-made boards including MDF, plywood, chipboard and OSB. The sharp point and prominent thread allow immediate engagement without pre-drilling in most applications, making them ideal for rapid assembly work, joinery, and general carpentry. The double countersunk head sits flush with the surface, suitable for visible work where appearance matters.
- Hardwoods and softwoods
- Plywood, MDF, chipboard and OSB
- Sheet metal applications
- Interior and exterior use with zinc and yellow passivate protection
Sizing and pack contents
These are 8 gauge screws, 30mm in length, supplied in a tub of 1000. The 8g diameter suits general-purpose woodworking and board fixing where a medium-strength fastening is required. Each box includes a high-quality Stick-Fit driver bit matched to the PoziSquare recess, eliminating the need to source a separate bit.
- 8 gauge x 30mm length
- 1000 screws per tub
- Stick-Fit driver bit included
- PoziSquare double countersunk head
Installation and performance benefits
The patented sharp point and prominent thread tip engage immediately, reducing the number of rotations needed to start the screw. This saves time on site and extends battery life on cordless drivers. The Stick-Fit connection between screw and bit allows one-handed driving, improving productivity and reducing fatigue during high-volume fastening work. The double countersunk head provides a professional finish flush with the surface.
- Rapid thread engagement saves driving time
- Reduces battery drain compared to standard screws
- Stick-Fit bit retention enables one-handed operation
- Countersunk head sits flush for a clean finish
Pre-installation checks
Confirm the material you are fixing suits woodscrew application. For hardwoods or dense boards, consider pre-drilling pilot holes to reduce splitting and driving effort. Check that your cordless driver or hand tool accepts the included Stick-Fit bit, or ensure you have a compatible PoziSquare driver. Store screws in a dry environment to maintain the zinc and yellow passivate finish.
- Verify material compatibility before use
- Pre-drill hardwoods and dense boards if splitting is a concern
- Ensure driver accepts Stick-Fit bit or PoziSquare recess
- Keep tub sealed and dry to protect finish