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The Range£28.19Visit shop Unifix Grade 10.9 Ht Fine Pitch Hexagon Bolts M16(1.5) X 70 - Q10960f001600070000 - Box Of 50 - Grey
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The Unifix Grade 10.9 HT Fine Pitch Hexagon Bolts are essential for professional engineers and construction specialists who require high-tensile strength for demanding structural assemblies. These bolts excel in high-stress applications by providing superior load distribution, though users should be mindful that their fine pitch threading requires precise alignment and compatible matching nuts to ensure integrity.
| Colour | Black |
|---|---|
| Model Part Number | M16(1.5) X 55 |
| Brand | Unifix |
The 10.9 rating is an ISO metric property class indicating the bolt's mechanical properties, specifically its ultimate tensile strength and yield point, making it suitable for high-stress load-bearing applications.
No, you must use nuts with the same thread pitch (1.5mm in this case). Attempting to use coarse nuts will cause damage to the threads of both the bolt and the nut.
Fine pitch threads have a larger stress area than coarse threads of the same diameter, providing higher tensile strength and better resistance to vibration-induced loosening.
No, they utilize a standard hexagon head that can be tightened with a standard wrench, spanner, or socket set of the appropriate size.
If they have been stretched beyond their yield point or if the threads show any sign of deformation, they should be replaced for safety reasons.
Back the bolt out completely, check for debris in the mating hole, and ensure the thread pitch of the bolt matches the internal thread of the component.
Verify the torque specifications and consider using a thread-locking compound designed for fine-thread applications.
For optimal performance, always use a calibrated torque wrench to achieve the manufacturer-recommended tension. When installing, start the bolt by hand to ensure the threads are properly aligned and avoid cross-threading, as fine pitch threads are more susceptible to damage during initial engagement. Keep the bolts clean and free of debris. While these bolts are robust, they are not intended for environments with extreme corrosive exposure; applying a light coating of anti-seize or thread lubricant during installation can help prevent galling and facilitate future maintenance.
