Locking any nut completely. 

Military Grade Vibration Resistance
Corrosion Resistant Stainless Steel
Fully Reusable 

Construction, Manufacturing, Industrial Applications & MORE! 


•  The only positive locking device on the market that locks into any hex nut and creates secure vibration proof bolted connections! 
•  Ensures reliability and maintains locking performance for the life of a project or product.
• Prevents nut from coming loose and eliminates the possibility of nuts falling off.

•  Usable in high vibration environments and in critical bolted joints where loosening is not an option. 


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 ©Limit Lock™ 2019


*All Limit Lock products & designs are internationally patented or patent pending. 
LIMIT Lock Ltd disclaims any warranties expressed or implied as to the suitability of any product for a particular purpose. It is the responsibility of the end user to select the proper product commensurate with the nature of the application.

Nut Stopper Pro - Locking Fastener

Locks any nut and prevents loosening even under severe vibration. Replaces and exceeds lock washers and lock nuts, offering castle nut level positive locking security without the headache of installation and disassembly.