Best current price£4.99from eBay
Shopping.co.uk recommended and popular offers
eBay£4.99Visit shop UNIFIX CUP SQUARE HEX BOLT & NUT BZP M10 x 90MM UB3157 BRAND NEW SEALED
Visit shop
The Range£11.54Visit shop Unifix Grade 4.8 Cup Square Hex Bolts And Nuts Din 603/555 Bright Zinc Plated - M10 X 90 (Box Of 25) - White
Visit shop5 offers from £4.99 - £13.21
View price history by clicking the chart icon.
The Unifix Cup Square Hex Bolts and Nuts are designed for contractors, DIY enthusiasts, and woodworkers who require reliable, heavy-duty fastening solutions for structural and general assembly projects. These Grade 4.8 steel fasteners offer superior holding power and consistent performance, though their specific cup square design requires a pre-drilled square-profile hole to prevent rotation during tightening. Each box of 25 provides a high-quality, corrosion-resistant solution that meets strict DIN 603/555 standards for safety and compatibility.
| Model Part Number | Ub Csxd10 090 |
|---|---|
| Brand | Unifix |
Yes, the bright zinc plating provides excellent corrosion resistance for outdoor use in sheltered or dry conditions, though they are not recommended for coastal salt-air environments.
It refers to the strength of the steel; 4.8 steel is a standard industrial strength suitable for general-purpose structural tasks.
You can force the square neck into soft wood, but for the best result and to prevent the bolt from rotating, a square hole or a pre-drilled pilot hole is recommended.
These bolts have a 10mm diameter and a length of 90mm.
Each box contains 25 bolts and 25 matching nuts.
Ensure the square shoulder is fully seated in the square hole. If the hole is too round, tap the bolt head with a hammer to imprint the square shape into the material.
Check the threads for debris or paint damage. Ensure you are using the matching Unifix nuts provided and not mixing with different thread pitches.
For optimal performance, ensure you drill the primary hole with a drill bit slightly larger than the bolt diameter (10mm). Use a punch or a mallet to seat the square shoulder of the bolt into the wood, ensuring the head sits flush. While the zinc plating offers good resistance, avoid using these bolts in direct contact with treated timber containing high acidic preservatives, as this can degrade the coating over time. Periodically check that nuts remain tight in high-vibration applications.
