NYLON LOCKING INSERT - Helps prevent thread stripping that could occur with all metal lock nuts. Provides a complete 360° locking circle around threads to prevent loosening under vibration and impact.
316/A4 STAINLESS STEEL CONSTRUCTION - Provides superior corrosion resistance for harsh environments. Can be used with 18-8 or 316 stainless fasteners. Helps prevents galling when used with 18-8 cap screws.