Prevailing-torque self-locking nut
Auto-Lok two-point deformed nuts are cost-effective, all-metal prevailing-torque lock nuts designed for high-volume applications. The locking effect is created by deforming the nut at two points, generating a controlled interference on the bolt thread.
This design delivers reliable locking performance while keeping the threads load bearing and suitable for repeated assembly, making it an excellent choice for industrial and structural joints.
- Low-cost solution ideal for large production runs.
- Relatively high prevailing torque obtained by two-point deforming with consistent characteristics to BS 4929.
- All threads remain load bearing — no damaged or “crushed” threads.
- Available in ISO metric coarse, UNF, UNC, BA, BSF and BSW threads.
- Size range from approx. 4 mm to 48 mm and from 6-32 (6BA) up to 2".
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Benefit
Tough and versatile, Auto-Lok two-point deformed nuts provide a cost-effective self-locking solution for demanding industrial and structural applications.
Suitable for multiple environments, they maintain locking performance at both high and low temperatures and are not affected by oils or common industrial chemicals.
A wide range of finishes and coatings is available so you can match the nut to your specific application and corrosion requirements.
Fast
Whether it’s delivering product on the requested date or answering a technical question quickly, Auto-Lok support is there for you.
With rapid responses to enquiries and a dedicated technical team, we help you find the right two-point deformed nut for your application without delay.
Lean on more than 20 years of experience with self-locking nuts and global deliveries to OEMs and maintenance organizations.
Definition
Two-point deformed nuts are all-metal self-locking nuts in which the prevailing torque is created by controlled deformation at two locations on the nut, producing a precise interference on the bolt thread.
This design provides secure locking without additional components such as washers, helping you reduce parts count and assembly time.
As a self-locking nut, it delivers repeatable prevailing torque while keeping load-bearing threads intact and suitable for multiple assembly cycles.