Best current price£12.13from The Range
Shopping.co.uk recommended and popular offers
The Range£12.13Visit shop Unifix Grade 10.9 Socket Csk Head Screws M6 X 40 - Box Of 200 - Grey
Visit shopThe Range£13.23Visit shop Unifix Grade 10.9 Socket Csk Head Screws M4 X 10 - Box Of 500 - Grey
Visit shop50 offers from £12.13 - £26.44
View price history by clicking the chart icon.
The Unifix Grade 10.9 Socket Countersunk Head Screws are designed for professional contractors and engineers who require high-strength fastening solutions for heavy-duty assembly. These screws provide exceptional structural integrity and a clean, flush-fit finish, though their high-tensile nature requires precise torque control to avoid stripping or over-tightening during installation.
| Colour | Silver |
|---|---|
| Model Part Number | 5014196336749 |
| Brand | Unifix |
The 10.9 rating indicates high-tensile strength, specifically designed for high-stress industrial and mechanical applications.
The bright zinc plating offers good corrosion resistance for general outdoor use, but they should be monitored for oxidation in extreme or saltwater environments.
You can, but use a low torque setting and a high-quality hex bit to prevent stripping the socket or snapping the head.
DIN 7991 is a German standard that specifies the dimensions and tolerances for metric countersunk socket head screws.
Yes, you will need a standard metric Allen wrench (hex key) or a corresponding hex bit for a power driver.
Ensure the hex key is fully seated and not worn. Use a high-quality, non-rounded hex bit.
Verify that the pilot hole is the correct size and ensure you are not exceeding the recommended torque specifications for a Grade 10.9 fastener.
To install, ensure your pilot hole is properly sized for the screw diameter to prevent material splitting or snapping the bolt. Use a high-quality, hardened steel hex key that matches the socket size precisely to prevent 'cam-out' or rounding of the internal socket. While the zinc plating provides good initial protection, avoid using these screws in highly acidic or marine environments without additional sealant. Periodically inspect fasteners in high-vibration applications to ensure they have not loosened over time.
