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The Unifix A4-70 Socket Button Head Screws (M6 x 16) are professional-grade fasteners designed for mechanics, builders, and DIY enthusiasts requiring reliable, corrosion-resistant hardware. Their primary benefit is the combination of high-quality stainless steel construction and a low-profile socket button head, which offers a clean aesthetic and easy installation. However, users should note that the button head profile is not intended for applications requiring a flush, countersunk finish.
| Colour | Grey |
|---|---|
| Model Part Number | Q407380000600016000 |
| Brand | Unifix |
These screws adhere to the ISO 7380-1 standard for M6 socket button head screws, which typically feature a head diameter of 10.5mm.
Yes, the A4-70 stainless steel construction offers high levels of corrosion resistance, making them suitable for marine and coastal applications.
No, this product is the screw only. You will need to source standard M6 nuts separately if your application requires them.
A4 stainless steel is generally considered non-magnetic, though minor magnetism can sometimes be induced during the manufacturing process.
The 16mm measurement refers to the length of the thread shank, measured from under the head to the tip of the screw.
Verify that the hole is not obstructed by paint, debris, or rust; ensure the screw is perfectly aligned before applying force.
Ensure you are using the correct metric hex key size and that the key is not worn; check the socket for any metal burrs.
Installation requires a standard metric M6 hex key or Allen driver. Ensure your threaded holes are clean of debris or old adhesive before installation to prevent cross-threading. Because these screws are stainless steel, they can occasionally gall if over-tightened; a small amount of anti-seize compound is recommended for high-load applications. To maintain their appearance in outdoor settings, periodic cleaning with a mild soap and water solution is sufficient to remove salt or grit buildup.
