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Unifix Grade 10.9 Socket Button Head Screws M3 x 6 - Grey

Unifix Grade 10.9 Socket Button Head Screws M3 x 6 - Grey

The Unifix Grade 10.9 Socket Button Head Screws are engineered for high-strength applications, pro...

Best current price£4.62from Rackhams

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Product Information

Full details

The Unifix Grade 10.9 Socket Button Head Screws are high-strength, durable fasteners ideal for professional tradespeople and DIY enthusiasts working on projects requiring robust mechanical integrity. Built to international ISO 7380-1 standards, these screws offer excellent load-bearing capacity and a sleek finish; however, users should ensure they have the correct metric hex key size to avoid stripping the socket head during installation.

All features

ColourGrey
Model Part NumberQ107380000300006000
BrandUnifix

Extended Product Information

FAQs

What is the head diameter of these screws?

As these are standard M3 screws following ISO 7380-1, the head diameter is typically 5.7mm.

Are these screws stainless steel?

No, these are Grade 10.9 high-tensile steel screws. They are not recommended for direct exposure to marine or highly corrosive environments without additional protection.

Can I use these with a standard screwdriver?

No, these require a 2mm Allen/hex key for installation.

What does Grade 10.9 mean?

Grade 10.9 refers to the material's mechanical properties, indicating high tensile strength suitable for heavy-duty industrial applications.

How many screws come in the box?

This package contains 500 individual screws.

What is the thread pitch for an M3 screw?

The standard metric thread pitch for M3 screws is 0.5mm.

Troubleshooting

Hex key slips inside the screw head

Verify that you are using a 2mm metric hex key. If the socket is already stripped, use a pair of pliers on the head if exposed or an extractor tool.

Screw binds before fully seated

Back the screw out and check for debris or misaligned threads in the hole. Do not force the screw, as this can snap the M3 shank.

Pros and Cons

Pros

  • High tensile strength (Grade 10.9)
  • Clean, low-profile aesthetic
  • ISO 7380-1 manufacturing standards
  • Convenient bulk pack quantity

Cons

  • Requires specific hex/Allen key tools
  • Not suitable for high-corrosion outdoor environments without coating
  • Small head diameter requires care when tightening

Setup, Compatibility & Care

To install these screws, you will need a 2mm metric hex key. Ensure that the threaded hole is clean and free of debris to prevent cross-threading. While these screws are strong, they are not stainless steel; to prevent oxidation or rust, apply a light coat of machine oil if using them in environments with variable humidity. Store the remaining screws in a cool, dry place inside their original packaging to keep the threads clean and organized.

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