Steel lock nuts are used to secure fastenings in place and prevent them from loosening due to vibrations. They are commonly used in various applications including machinery, automotive, and construction.

Self-locking nuts utilize a nylon insert or a deformed thread design that creates friction with the bolt threads, preventing them from loosening under vibration or movement. This ensures a more stable fastening.

Yes, steel lock nuts can be used outdoors; however, it is recommended to check if they have any additional protective coatings (like zinc plating) that provide rust resistance for prolonged use in outdoor environments.

The sizes of steel lock nuts may vary depending on the retailer, but they typically range from small metric dimensions (M4) to larger sizes (up to M30 or more). Always refer to product specifications for exact sizing options.

'Yes, you can purchase steel lock nuts using cheque or cash as accepted payment methods.'