Hillman Zinc-Plated Steel Nylon Insert Lock Nuts 1/4-20 Coarse Thread

Key features

• LOCKS AND RESISTS VIBRATION: This lock nut has a built-in nylon collar that grips the bolt threads as it is tightened, holding the nut fast against vibration and movement so a bolted joint stays tight without a separate washer or adhesive.
• NYLON COLLAR GRIPS THE BOLT: Fitting a 1/4-20 coarse bolt, an unthreaded nylon ring at the top of the nut deforms around the bolt threads as it drives through, creating friction that resists loosening while the hex flats take a wrench.
• ZINC-PLATED STEEL: Made from steel with a protective zinc plating and a nylon locking ring, the nut resists rust and corrosion for dependable indoor and light outdoor use, keeping its locking grip through normal handling and service.
• MACHINERY AND VIBRATION USE: Ideal for machinery, engines, equipment, and vehicle assemblies subject to vibration and movement where a standard nut would loosen, a dependable self-locking nut for repair, maintenance, and assembly work.
• TRUSTED HILLMAN QUALITY: Hillman supplies dependable fasteners and hardware that homeowners and pros rely on for everyday projects. Keep these nuts on hand for assembly, mounting, and repair jobs around the home and shop.

Product DescriptionHillman 1/4"-20 zinc-plated nylon insert stop nuts are designed to create secure, vibration-resistant fastening connections when used with compatible bolts and threaded rods. These lock nuts feature an integrated nylon insert that grips the bolt threads as the nut is tightened, helping prevent the nut from loosening during use. Commonly referred to as nylon insert lock nuts or Nylock nuts, these fasteners are widely used in construction, automotive assembly, equipment maintenance, and mechanical installations where reliable fastening performance is required. The nylon insert creates additional friction against the bolt threads, helping maintain a tight connection even in applications exposed to vibration, movement, or repeated mechanical stress. This locking feature helps improve the long-term reliability of the fastening system. These nuts are designed for use with 1/4"-20 USS coarse thread bolts or threaded rods, ensuring proper thread engagement and dependable fastening performance. They can also be used alongside washers of the same size and finish to create a complete fastening system. Each nut is constructed from durable steel and finished with a zinc-plate

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