UNF Aerotight Nuts

UNF Aerotight nuts are precision-engineered self-locking nuts designed to deliver secure, vibration-resistant fastening for fine-threaded applications. The UNF (Unified Fine) thread form provides greater strength and a tighter fit than coarse threads, making these nuts ideal for precision engineering, automotive, aerospace, and instrumentation assemblies where accuracy and reliability are essential.

Unlike standard nuts, Aerotight self-locking nuts feature an all-metal design that provides a consistent locking action without the need for additional locking devices such as spring washers, nylon inserts, or thread-locking compounds. This ensures dependable performance even under high vibration, thermal cycling, or heavy dynamic loads. The result is a fastener that stays secure, reduces maintenance needs, and can be reused multiple times without loss of performance.

P type = thick, T type = thin

View our UNF bolt range here

View our Imperial washers here

More coating guidance here 

All Available Sizes & Types