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B&Q£6.25Visit shop B&Q - Grade 10.9 Socket Button Head Screws Iso 7380-1 BzpM5 X 10Box Of 200
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The Unifix Grade 10.9 Socket Button Head Screws are designed for professional engineers, machinists, and DIY enthusiasts who require high-tensile strength for demanding structural or mechanical assemblies. Featuring a robust Grade 10.9 steel construction and an ISO 7380-1 compliant design, these screws offer excellent load-bearing capacity and a clean, low-profile finish. A key caveat is that while they are zinc-plated for moderate corrosion resistance, they are best suited for indoor or controlled-environment applications rather than direct, harsh outdoor exposure.
| Colour | Silver |
|---|---|
| Model Part Number | 5014196334103 |
| Brand | Unifix |
Grade 10.9 refers to the tensile strength of the steel. It indicates a nominal tensile strength of 1000 MPa and a yield strength of 900 MPa.
They are zinc-plated, which provides some resistance to rust, but they are generally intended for indoor or protected outdoor use. For marine or harsh coastal environments, stainless steel may be preferred.
You need an Allen key or a hex drive bit that matches the internal socket size of the screw.
No, these are machine screws designed to be used in pre-tapped holes or with matching nuts.
Each box contains 200 individual screws.
It is an international standard that defines the dimensions and mechanical properties specifically for button head socket screws.
Ensure the hex key is fully seated and is the correct metric size; replace the worn hex key immediately.
Check that the hole is clear of debris and appropriately tapped for the screw size to avoid cross-threading.
To ensure maximum holding power, always use the correctly sized hex key for the specific socket diameter. Avoid over-torquing, which may strip the threads or the internal hex recess. While the zinc plating offers corrosion resistance, consider applying a light machine oil or a suitable thread-locking compound if installing in areas prone to high vibration. Always store unused screws in a cool, dry place to prevent moisture accumulation, which can degrade the plating over extended periods.
