Shopping.co.uk

Unifix Hexagon Setscrews - Silver

Unifix Hexagon Setscrews - Silver

The Unifix A2-304 Hexagon Setscrews are designed for reliable fastening in various applications. W...

Best current price£9.02from The Range

Colour
GreySilver

Best offers

Shopping.co.uk recommended and popular offers

Lowest priceMost popular
The Range£9.02Visit shop

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

Visit shop

All Offers

42 offers from £9.02 - £20.36

View price history by clicking the chart icon.

The RangeUnifix A2-304 St/St Hexagon Setscrews M6 X 45 - Q209330000600045000 - Grey
Free delivery in 1–3 days
£9.02
Visit shop
eBayUnifix A2-304 Hexagon Setscrews M6 x 45
Free delivery in 1–3 days
£9.55
Visit shop
DebenhamsUnifix Unisex Silver A2-304 Hexagon Setscrews M6 X 45 In
Free delivery in 1–3 days
£9.70
Visit shop
B&QB&Q - A2-304 St/st Hexagon Setscrews M6 X 45Q209330000600045000
Free delivery in 1–3 days
£10.19
Visit shop
OnBuy.comUnifix A2-304 Hexagon Setscrews M12 X 80 - Q209330001200080000 - Box Of 25 5014196324531
Free delivery in 1–3 days
£13.56
Visit shop

Product Information

Full details

The Unifix A2-304 Hexagon Setscrews (M20 x 45) are professional-grade fasteners engineered for engineers and construction experts who require high corrosion resistance and structural reliability. These heavy-duty screws provide exceptional fastening strength for demanding mechanical projects, though users must ensure they have the appropriately sized wrench or socket set to accommodate the M20 diameter.

All features

ColourSilver
Model Part Number1263056
BrandUnifix

Extended Product Information

FAQs

What does the A2-304 rating mean?

A2-304 is a grade of stainless steel that provides excellent corrosion resistance in standard atmospheric conditions.

Are these screws fully threaded?

Yes, as per DIN 933 standards, these hexagon setscrews are threaded along the entire length of the shank.

Can these be used in marine environments?

A2-304 is suitable for many outdoor environments, but for direct saltwater contact, A4 (316 grade) stainless steel is recommended.

What is the diameter and length of this specific screw?

This model is 20mm in diameter (M20) with a length of 45mm.

Do I need a special tool to install these?

No, a standard M20-compatible hex socket or wrench is sufficient for installation.

Troubleshooting

Screw binds during installation

Back the screw out, check the threads for debris, and ensure it is perfectly perpendicular to the surface.

Difficulty achieving high torque

Verify the socket or wrench size matches M20 standards and check that the mating surface is flat and clear.

Pros and Cons

Pros

  • High resistance to environmental corrosion due to A2-304 steel
  • Easy to install with standard hexagonal hand tools
  • Complies with industry-standard DIN 933 specifications
  • Provides significant tensile strength for heavy-duty applications

Cons

  • Larger diameter (M20) requires heavy-duty tools
  • Not suitable for high-acid or marine salt-spray environments (use A4/316 for those)
  • Limited to threaded applications

Setup, Compatibility & Care

For optimal performance, always ensure that the receiving hole is properly tapped to M20 specifications. During installation, avoid cross-threading by manually turning the screw a few rotations before applying a wrench. While A2-304 stainless steel is rust-resistant, it can still surface-stain if exposed to harsh industrial chemicals. Periodically inspect the fastener for signs of fatigue or thread deformation if the assembly is subject to high-vibration environments. If used outdoors, a light coating of anti-seize compound on the threads can prevent galvanic corrosion over long durations.

Price History

DatePrice
Visit shop