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Unifix Hexagon Setscrews - Silver

Unifix Hexagon Setscrews - Silver

The Unifix A2-304 Hexagon Setscrews are designed for reliable fastening in various industrial and ...

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GreySilver

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Unifix A2-304 St/St Hexagon Setscrews M6 X 45 - Q209330000600045000 - Grey

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The RangeUnifix A2-304 St/St Hexagon Setscrews M6 X 45 - Q209330000600045000 - Grey
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£9.02
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eBayUnifix A2-304 Hexagon Setscrews M6 x 45
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£9.55
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DebenhamsUnifix Unisex Silver A2-304 Hexagon Setscrews M6 X 45 In
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£9.70
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B&QB&Q - A2-304 St/st Hexagon Setscrews M6 X 45Q209330000600045000
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OnBuy.comUnifix A2-304 Hexagon Setscrews M12 X 80 - Q209330001200080000 - Box Of 25 5014196324531
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£13.56
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Product Information

Full details

The Unifix A2-304 Hexagon Setscrews are professional-grade fasteners designed for mechanics, engineers, and DIY enthusiasts who require reliable, corrosion-resistant hardware for structural and mechanical assemblies. Engineered to the rigorous DIN 933 standard, these setscrews provide a precise fit and consistent load-bearing performance, though they are specifically intended for industrial applications where material compatibility with A2-grade stainless steel is essential.

All features

ColourSilver
Model Part NumberA2-304
BrandUnifix

Extended Product Information

FAQs

Can these be used in saltwater environments?

A2-304 stainless steel is corrosion-resistant but not fully marine-grade. For direct exposure to saltwater, A4-316 grade is recommended.

What tool do I need to tighten these?

You can use a standard open-ended wrench, a ring spanner, or a socket wrench that matches the hexagon head size.

What does 'DIN 933' mean?

DIN 933 is a German industrial standard for fully threaded hexagon head screws.

Are these fasteners magnetic?

A2-304 stainless steel is typically non-magnetic in its annealed state, though slight magnetism can occur due to cold working during manufacturing.

Can I reuse these after removing them?

Yes, provided the threads are not deformed or stripped, you can reuse stainless steel fasteners.

Troubleshooting

Fastener is difficult to screw in

Check the tap for debris or cross-threading; ensure the thread pitch matches the receiving hole.

The threads seem to 'weld' or seize during tightening

This is called galling. Apply an anti-seize compound and reduce the installation speed if using a power tool.

Pros and Cons

Pros

  • Excellent resistance to oxidation and rust
  • Easy to install with standard manual or power tools
  • High mechanical strength for demanding assemblies
  • Consistent quality guaranteed by DIN 933 manufacturing

Cons

  • Not suitable for high-acidity or marine saltwater environments
  • Requires proper matching of stainless steel nuts to prevent galling
  • Premium material cost compared to standard zinc-plated steel

Setup, Compatibility & Care

To ensure the longevity of your Unifix A2-304 setscrews, always use a matching A2 stainless steel nut or a pre-tapped hole of the same specification. When installing, it is highly recommended to apply a small amount of anti-seize lubricant to the threads, especially if using a power driver, as stainless steel is prone to 'galling' or cold-welding under high friction. Ensure that the socket or wrench size matches the hex head dimensions perfectly to prevent stripping the corners. For maintenance, a simple rinse with fresh water or a wipe-down with a clean cloth is usually sufficient to remove debris or salt buildup in external applications.

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