100PCS M3 M6 Nylon Insert Hex Lock Nuts,Self-Locking Nuts

Keep your fasteners firmly in place with these Nylon Insert Hex Lock Nuts. Crafted from durable carbon steel, these self-locking nuts feature a built-in nylon insert that grips the bolt threads tightly, preventing loosening caused by vibration, torque, or movement over time. The classic hexagonal shape allows for easy installation and removal using standard wrenches or sockets. Available in M3 and M6 sizes, this versatile 100-pack is ideal for a wide range of applications including machinery assembly, automotive repairs, furniture construction, and general DIY projects. The nylon insert provides a secure, reliable hold without damaging the bolt threads, making these nuts reusable in many applications. Whether you're a professional tradesperson or a home improvement enthusiast, having a generous supply of these dependable lock nuts on hand ensures you're always prepared for your next project. Stock up and tackle any fastening task with confidence.

• MATERIAL: Premium Carbon Steel & Zinc Plated Finish: Made of high-strength carbon steel for stable load-bearing and tensile resistance. Uniform galvanized surface forms a protective barrier against moisture, oxidation and rust, greatly extending service life for indoor workshops and mild outdoor damp environments. Smooth rolled inner threads avoid slipping or damaging matching bolts during installation.
• NYLON INSERT LOCKING: Each nut features a nylon insert that grips the bolt threads securely, preventing loosening caused by vibration or movement.
• VERSATILE SIZING: This pack includes M3 and M6 sizes, making them suitable for various mechanical, automotive, and construction projects.M3 nuts work perfectly for 3D printers, RC models, robotics, electronic frames and miniature equipment; M6 nuts fit motor brackets, bicycle racks, motorcycle parts, fan housings, lighting fixtures, metal shelves and small electrical enclosures. Great for hobbyists, maintenance workers and small factory assembly
• SELF-LOCKING DESIGN: The self-locking mechanism eliminates the need for additional locking hardware, saving time and simplifying assembly.Standard Hex Structure for Quick Mounting: Standard hexagonal shape matches all regular wrenches and socket tools for effortless assembly and disassembly. The nylon ring maintains reliable locking force after multiple reuses. Bulk 100-pack offers lower unit cost than small single-size bags, perfect for long-term stock and frequent repair work
• BULK PACK OF 100: 2 Size Combo Pack, Total 100 Pieces: Comes with 50pcs M3 nylon lock nuts + 50pcs M6 nylon lock nuts, two most common sizes for small machinery and DIY projects. No need to purchase separate sizes individually, saving your time and procurement cost for daily repair, assembly and hobby building