Aerotight Nuts. Aerotight is a Registered Trademark and can only be applied to goods manufactured by the Premier Screw and Repetition Company Limited.

• All-metal, self-locking nut designed to stay in place even under severe vibration. Works by using a locking collar that is deflected to grip the bolt's threads, creating a "prevailing torque" that prevents loosening.
• All-metal construction allows them to be used at higher temperatures and makes them resistant to oil.
• Also known as an Aerotight lock nut or Stiff Nut.
• Any company infringing the registered trade mark may be liable to legal proceedings.
• Aerotight nuts should not be used on damaged or interrupted threads.
• When assembled on the screw at least two threads should protrude through the Aerotight nut.
• Advantages: Will not work loose. No other locking device needed.