[100 PKG] Heavy Hex Lock Nuts NTU Nylon Inserts Steel Zinc 5/16-18

Heavy Hex Lock Nuts NTU Nylon Inserts – Steel Zinc 5/16-18 deliver reliable locking performance for industrial and automotive applications, combining a rugged steel body, zinc finish, and a nylon insert that resists loosening under vibration.

The NTU nylon insert provides a positive locking action by embedding threads and creating friction, so bolts stay tensioned even in dynamic environments. The heavy hex head offers extra wrenching surface for easy tightening in tight spaces.

• Locking mechanism: Nylon insert locks the nut in place to prevent loosening from vibration and cycling.
• Material: Steel with a durable zinc coating for corrosion resistance and long service life.
• Size and thread: 5/16-18, a common coarse thread for general-purpose fasteners.
• Design: Heavy hex head for greater turning surface and easier installation with standard tools.
• Applications: Ideal for machinery, automotive, construction, and equipment assemblies requiring reliable vibration resistance.

Constructed to withstand demanding industrial environments, these NTU nylon insert lock nuts pair compatibility with standard bolts and a robust finish to ensure dependable performance over time. For best results, use with appropriate washers and follow standard torque guidelines for 5/16-18 fasteners.