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eBay£5.50Visit shop M6 x 50mm COUNTERSUNK MACHINE SCREWS x 10 POZI DRIVE STAINLESS STEEL A2 DIN 965
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The Range£7.59Visit shop Unifix A2-304 St/St Machine Screws M4 X 10 - Q209650000400010000 - Grey
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The Unifix A2-304 Stainless Steel Machine Screws are engineered for DIY enthusiasts and trade professionals who require a high-strength, corrosion-resistant fastening solution. Featuring a reliable Pozi countersunk head design, these screws are ideal for flush-mount applications across metal, plastic, and wood surfaces. While they offer exceptional durability due to their stainless steel construction, users should ensure they have the correct Pozi-drive screwdriver size to prevent cam-out during installation.
| Colour | Grey |
|---|---|
| Model Part Number | 5014196321622 |
| Brand | Unifix |
A2-304 stainless steel offers good corrosion resistance, but for harsh salt-water marine environments, A4-316 grade stainless is typically recommended.
While it may fit, it is not recommended as it will likely result in cam-out and damage to the screw head; always use a dedicated Pozi drive.
DIN 965Z is a German industry standard for countersunk head machine screws with a cross-recess (Pozi) drive.
Yes, while these are machine screws, pre-drilling is necessary to prevent the wood from splitting and to ensure the threads have a clean path.
A2-304 stainless steel is generally considered non-magnetic, though it may show slight magnetic properties depending on the manufacturing process.
Ensure the screwdriver bit size matches the Pozi head precisely and apply firm, consistent downward pressure.
Check that the hole is properly tapped and apply a thread lubricant to reduce friction.
Ensure the pilot hole is correctly countersunk to the proper depth and angle for the head.
For installation, ensure you are using a correctly sized Pozi-drive screwdriver or bit. Using an incorrect size can damage the internal cross-recess, making future removal difficult. When driving these into metal, use a lubricant if the fit feels excessively tight to prevent heat buildup, which can cause stainless steel threads to gall or seize. Periodically inspect fasteners in high-vibration applications to ensure they remain torqued correctly. Store in a dry environment to maintain the integrity of the threads and protect the finish.
