Hillman Coarse Thread Hex Lock Nuts, 1/2in-13, 50 Pack, Zinc

Key features

• NYLON INSERT LOCK NUTS RESIST VIBRATION LOOSENING: 1/2 in.-13 nylon insert stop nuts grip bolt threads as the nut is tightened, preventing loosening from vibration, movement, or stress in construction and mechanical assemblies.
• BUILT-IN NYLON INSERT FOR RELIABLE VIBRATION-RESISTANT LOCKING: Integrated nylon insert creates friction against bolt threads during tightening, keeping the nut firmly in place and reducing back-off risk in demanding fastening applications.
• COMPATIBLE WITH 1/2 IN.-13 COARSE THREAD BOLTS AND RODS: Engineered for 1/2 in.-13 coarse thread bolts and threaded rods, ensuring proper thread engagement and reliable fastening in construction, mechanical, and equipment assemblies.
• ZINC-PLATED STEEL FOR CORROSION RESISTANCE: Durable zinc-plated coating provides moderate rust protection for general-purpose fastening and mechanical applications. Dependable performance across a range of hardware installations. 50-piece pack.
• TRUSTED HILLMAN FASTENING SOLUTIONS: Hillman hardware products are engineered for consistent quality, dependable performance, and reliable fastening across construction, repair, and home improvement project applications.

Product DescriptionHillman 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. Packa

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