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The Range£7.20Visit shop Unifix Grade 12.9 Socket Head Cap Screws M5 X 10 - Box Of 200 - Grey
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The Unifix Grade 12.9 Socket Head Cap Screws are engineered for professionals and DIY enthusiasts requiring maximum fastening strength in critical engineering and construction projects. These high-tensile fasteners offer exceptional durability and a reliable hold through a socket head design, though users should be aware that the high-grade alloy may be prone to surface oxidation if used in extreme outdoor environments without additional coating.
| Colour | Silver |
|---|---|
| Model Part Number | DIN 912 |
| Brand | Unifix |
The 12.9 rating refers to the mechanical properties of the steel; it indicates a minimum tensile strength of 1200 MPa and a yield strength of 1080 MPa.
While they have a corrosion-resistant finish, they are primarily for indoor or sheltered machinery use. For high-moisture outdoor areas, consider stainless steel alternatives.
Yes, their high tensile strength makes them excellent for heavy-duty machinery. Ensure they are torqued correctly and consider using a thread locker for added security.
Yes, you must use a standard metric hex key that matches the socket size of the specific bolt diameter.
It is generally recommended to use new bolts for safety-critical applications, as high-tensile steel can undergo structural changes under extreme torque.
The fastener head may be stripped or the incorrect size hex key is being used; verify tool size and use a bolt extractor if the head is damaged.
High-tensile fasteners can gall when tightened rapidly; use an anti-seize lubricant or tighten slowly to reduce friction.
For optimal performance, always ensure you are using a high-quality hex key that fits the socket depth properly to prevent stripping the internal drive.
Compatibility Notes:
Care Instructions:
