Unifix A2-70 St/st Socket Button Head Screws - M10 x 40 - Box of 100 - Silver

The Unifix A2-70 St/St Socket Button Head Screws are designed for reliable fastening in various ap...

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The RangeUnifix A2-70 Socket Button Head Screws M10 X 40 - Box Of 100 - Grey
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DebenhamsUnifix Unisex Silver A2-70 Socket Button Head Screws - Box Of 100 In
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B&QB&Q - A2-70 St/st Socket Button Head Screws M10 X 40Q207380001000040000Box Of 100
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Product Information

Full details

This guide is for anyone needing a durable and corrosion-resistant fastening solution, particularly in construction, automotive, or marine environments. The Unifix A2-70 Socket Button Head Screws offer exceptional strength and reliability due to their high-quality stainless steel construction. A potential caveat is their specific size (M10 x 40), which may not suit all applications requiring different dimensions. Key features include A2-70 stainless steel for corrosion resistance, a socket button head for ease of installation, and compliance with ISO 7380-1 standards.

All features

ColourSilver
Model Part Number5014196334745
BrandUnifix

Extended Product Information

FAQs

What does A2-70 mean?

A2-70 refers to the grade and strength of the stainless steel. 'A2' indicates the grade (similar to 304 stainless steel), and '70' denotes a minimum tensile strength of 700 N/mm².

What is the required Allen key size for these screws?

The M10 socket button head screws typically require an 8mm metric Allen key (hex key).

Can these screws be used outdoors?

Yes, the A2-70 stainless steel provides excellent resistance to corrosion and rust, making them suitable for outdoor applications.

Are these screws magnetic?

A2 stainless steel (like 304) is generally non-magnetic in its annealed state. However, it can become slightly magnetic after cold working, such as during the manufacturing process of the screw.

What is the difference between socket button head and other screw head types?

The socket button head has a rounded, low-profile shape with a hexagonal socket drive, offering a clean appearance and easy installation with an Allen key, unlike pan or hex heads which have different profiles and drive types.

How many screws are in a box?

This product comes in a box containing 100 screws.

Troubleshooting

Screw does not thread smoothly

Check that the mating thread is clean and free of debris. Ensure you are using the correct M10 thread and that it is not damaged. Start threading by hand to prevent cross-threading.

Allen key slips or won't engage properly

Verify you are using the correct size Allen key (8mm for M10). Ensure the socket drive is clear of any obstruction or debris. The socket may be damaged if the key consistently slips.

Screw head strips during tightening

Stop immediately. Excessive force can strip the socket drive. Ensure you are using the correct size Allen key and applying steady, even pressure. If stripped, the screw may need to be drilled out.

Pros and Cons

Pros

  • Excellent corrosion and rust resistance from A2-70 stainless steel.
  • Secure and easy installation with the socket button head design.
  • Standardized dimensions ensure compatibility and reliable performance.
  • Durable construction suitable for various demanding applications.
  • Bulk packaging for convenience and cost-effectiveness on larger projects.

Cons

  • Specific size (M10 x 40) may not fit all fastening needs.
  • May require specific Allen keys for installation.
  • Not intended for extremely heavy-duty structural loads where larger fasteners are required.

Setup, Compatibility & Care

Setup:

  1. Ensure the mating hole is tapped with an M10 thread or a suitable nut is used.
  2. Insert the screw through the components to be fastened.
  3. Use an appropriate metric Allen key (hex key) of size 8mm to engage the socket drive.
  4. Tighten the screw firmly, but avoid over-tightening which could strip the threads or damage the material being fastened.

Compatibility:

  • These screws are designed to mate with M10 threaded holes or M10 nuts.
  • Compatible with materials such as metal, wood (with pre-drilled pilot holes), and plastics.
  • Compliant with ISO 7380-1 standards, ensuring compatibility with other fasteners adhering to this specification.

Care:

  • While A2-70 stainless steel offers excellent corrosion resistance, prolonged exposure to harsh chemicals or abrasive cleaning can still cause surface degradation.
  • Clean with a damp cloth. Avoid using abrasive scouring pads or harsh chemical cleaners.
  • For optimal longevity, ensure threads are kept clean and free from debris.

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