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The Range£5.61Visit shop Unifix A2-304 St/St Hexagon Setscrews M8 X 40 - Ubssmhs08 040 - Grey
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The Unifix A2-304 Hexagon Setscrews are designed for professional contractors and DIY enthusiasts who require reliable, heavy-duty fastening solutions that resist environmental wear. These high-quality screws offer exceptional durability and corrosion resistance, making them ideal for outdoor and construction projects, though their specialized material means they are primarily intended for structural fastening rather than finish-carpentry.
| Colour | Grey |
|---|---|
| Model Part Number | 5014196127897 |
| Brand | Unifix |
A2-304 stainless steel is highly corrosion-resistant, but for direct saltwater immersion, A4-316 grade is typically recommended.
Yes, but use caution to avoid over-tightening or damaging the stainless steel threads through excessive heat generated by friction.
It refers to the grade of stainless steel, denoting a chromium-nickel alloy that offers excellent resistance to corrosion and oxidation.
Yes, provided the threads remain undamaged and free of deformation or excessive wear.
This product listing refers to the setscrews themselves; it is recommended to use appropriately sized stainless steel washers for a secure installation.
Verify that the hole is free of debris and that the threads are aligned correctly; consider using a lubricant if installing in dense materials.
Ensure the socket or wrench is fully seated on all six sides of the hex head and is the correct size to prevent slippage.
Ensure a proper pilot hole has been drilled, as M12 screws are designed for structural applications and require adequate clearance.
For optimal performance, ensure that the pilot holes are correctly sized for the M12 diameter. Because these are stainless steel, avoid using impact drivers with excessive force at the very end of the tightening process to prevent thread galling. Clean the screws with a damp cloth if they accumulate construction dust, and store them in a dry container to maintain the protective properties of the A2-304 steel. Verify the compatibility of the mating hardware, ensuring the bolt length (50mm) is sufficient for the total thickness of the materials being joined plus the required thread engagement.
