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The Range£16.18Visit shop Unifix Grade 10.9 Ht Hexagon Bolts Din 931 S/Col - M14 X 60 - Box Of 50 - Grey
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The Unifix Grade 10.9 HT Hexagon Bolts are high-strength fasteners engineered for demanding construction and engineering projects where reliability is paramount. These bolts provide superior tensile strength, making them ideal for heavy-duty structural applications. However, users should ensure they are using the correct diameter and length for their specific assembly, as Grade 10.9 bolts are specialized for high-stress environments and may be overkill for lightweight hobbyist projects.
| Colour | Grey |
|---|---|
| Model Part Number | 1269878 |
| Brand | Unifix |
The 10.9 grade indicates a high-strength steel bolt with a nominal tensile strength of 1000 MPa and a yield strength of 900 MPa.
Yes, they feature a grey corrosion-resistant finish, though additional protective coatings may be required for harsh or marine environments.
No, as they comply with DIN 931 standards, these bolts feature a partial thread with an unthreaded shank, which is optimized for shear loading.
A standard metric socket set or open-ended spanner of the corresponding size is required.
It is generally recommended to use new bolts for critical structural connections to ensure the metal has not been fatigued by previous torque application.
Verify that the diameter and thread pitch match the mating hole exactly and ensure there is no debris or paint inside the thread.
Ensure you are using the correct size metric socket or spanner and verify the tool is fully seated on the hexagonal flats before applying torque.
To ensure peak performance, match these bolts with compatible nuts of a matching or higher grade. When installing, always use a calibrated torque wrench to reach the recommended tension levels for your specific project. Avoid over-torquing, which can lead to fatigue or premature failure. While these bolts have an inherent level of corrosion resistance, they should be kept in a dry environment and free from excessive chemical exposure. Periodic inspection of the bolt head and threads is recommended for critical joints to ensure they have not loosened due to operational vibration.
