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The Range£13.03Visit shop Unifix Grade 10.9 Ht Hexagon Setscrews Din 933 Bzp - M10 X 40 - Box Of 100 - Grey
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The Unifix Grade 10.9 HT Hexagon Setscrews are professional-grade fasteners designed for heavy-duty construction and engineering applications that demand high load-bearing capacity. These setscrews are ideal for structural assembly where reliability is paramount, though they require careful selection of thread size and length to ensure perfect fitment for specific project requirements.
| Colour | Grey |
|---|---|
| Model Part Number | 1263627 |
| Brand | Unifix |
The 10.9 designation indicates that the bolt has a tensile strength of 1000 MPa and a yield strength of 900 MPa, suitable for heavy-duty load-bearing.
Yes, DIN 933 specifies that the bolt is threaded fully up to the underside of the hexagon head.
While the BZP finish offers some protection, it is intended primarily for indoor or sheltered use; for harsh, constant outdoor exposure, stainless steel is recommended.
A standard metric socket wrench or spanner of the corresponding size is ideal for high-torque applications.
If the bolt has not undergone significant stress or structural yielding, it can generally be reused, but for critical safety connections, fresh fasteners are advised.
Check that the hole diameter is correct for the bolt size and ensure the thread pitch matches the intended component.
Switch to a high-quality six-point socket rather than an open-ended spanner to increase contact area and prevent slipping.
The BZP coating may have been compromised; apply a cold galvanizing spray or replace if the rust is deep to maintain structural integrity.
To install, select the appropriate size spanner for the hexagon head, ensuring the tool is not worn to prevent rounding the bolt corners. For structural applications, always use compatible flat and spring washers to distribute pressure evenly and prevent loosening due to vibration. Although the BZP finish provides good corrosion resistance, it is recommended to keep these setscrews in a dry, low-humidity storage area before use. Avoid using these in direct contact with caustic substances, as this can degrade the zinc plating and lead to surface rust. If the setscrews show signs of deformation after removal, they should be discarded rather than reused, as high-tensile fasteners are often designed for single-load structural integrity.
