Hillman 50 Pcs Nylon Insert Stop Nuts (1/2"-13) | USS Coarse Thread Hex Lock Nuts for Bolt Fastening | Zinc-Plated Steel Locking Nuts for Machinery, Construction & Mechanical Hardware

Product Description Hillman 1/2"-13 zinc-plated nylon insert stop nuts are designed to provide secure and vibration-resistant fastening connections in mechanical, construction, and hardware installations. Often referred to as nylon insert lock nuts or Nylock nuts, these fasteners are widely used in equipment assembly, automotive repairs, machinery installations, and structural fastening applications. Each nut contains a nylon locking insert that grips the threads of a bolt when tightened. This added friction helps prevent the nut from backing off due to vibration or movement, helping maintain a secure fastening connection over time. These lock nuts are designed for use with 1/2"-13 USS coarse thread bolts or threaded rods, ensuring compatibility with standard hardware used in many construction and mechanical applications. They can also be used alongside washers of the same size to create a complete fastening system. Constructed from durable steel and finished with a zinc-plated coating, these nuts provide moderate protection against rust and corrosion. This corrosion-resistant finish helps maintain reliable performance in general-purpose indoor and light exterior environments. Packaged in a convenient C-Pak containing 50 lock nuts, these fasteners are ideal for contractors, mechanics, equipment installers, and DIY homeowners working on machinery repairs, structural assemblies, automotive maintenance, and general hardware fastening projects. From the Manufacturer The Nylon Insert Lock Nut features an integrated nylon insert that grips bolts to help resist vibration effects. This easy-to-use nut is ideal to securely fasten a bolt when connecting materials.

• Use for fastening to a bolt when mechanically joining materials
• Nylon insert for added security to keep nut in place
• Use with bolt and washer of the same material, finish, and grade
• Coarse thread for durability
• Use for any indoor/outdoor projects