K-Lock Nut with External Tooth Washer Zinc Plated Steel Star Locking Nut Washer Silver

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1. Performance & Material Properties
   • Hardened Carbon & Alloy Steel Body – Stamped from C1045 carbon steel or optional 4140 alloy, quenched and tempered to achieve tensile strengths of 600–900 MPa and Rockwell hardness HRC 30–40, delivering high shear and pull-out resistance.
   • Integrated External “Star” Tooth Washer – The captive washer features 16–24 sharp zinc-plated steel teeth that bite into the mating surface and nut flange, providing consistent prevailing torque (≈15–30 % above a standard nut) and resisting loosening under vibration up to 8 g.
   • Corrosion-Resistant Zinc Plating – Standard trivalent zinc coating (~8–12 µm) offers ≥120 h salt-spray (ASTM B117) protection; optional epoxy-polyester powder-coat in any RAL color (including black, blue, red) for UV stability and on-part visual coding.
   • Standard Hex Geometry & Thread Options – Available in M3–M12 and ¼-20, 5⁄16-18 UNC sizes; threads cold-rolled to ISO 965/1 class 6H or ANSI B1.1 tolerances for burr-free engagement and ≥10 000 assembly cycles.
2. Detailed Application Range
   • Electrical & Electronics Enclosures – Secures sheet-metal panels, PCB standoffs and cable-tray brackets in control cabinets, server racks and consumer electronics where light clamp loads and anti-vibration locking are critical.
   • Automotive Interiors & Light Assemblies – Fastens trim panels, instrument clusters, seat frames and console components in passenger cars, motorcycles and recreational vehicles, resisting continuous vibration and road shock.
   • Machinery & Equipment Guarding – Ideal for mounting safety guards, light-duty brackets and warning signs on production equipment, conveyors and machine tools in facilities supplied by McMaster-Carr, Fastenal, Grainger and RS Components.
   • Furniture, Fixtures & Displays – Used in office partitions, retail display racks, accent lighting and POS kiosks—applications that demand aesthetics, easy assembly and reliable thread-locking without adhesives.
3. Effortless Operation & User Convenience
   • Pre-Assembled Nut & Washer – No loose parts: the star washer is permanently affixed, eliminating assembly errors and speeding up installation in both automated screw-feeding systems and manual workstations.
   • Drop-In & Spin-In Installation – Thread onto any standard bolt or stud and spin tight: teeth engage instantly, providing immediate locking action without the need for additional lock washers or adhesives.
   • Universal Tool Compatibility – Works with standard wrenches, sockets, hex keys and power drivers; no proprietary tools or torque-limiting attachments required.
   • Global Availability & Custom Kits – Readily stocked on Amazon, eBay, Alibaba, McMaster-Carr, Fastenal, Würth, Grainger and manufacturer sites (Bossard, Würth); available in bulk bags or mixed assortments (50–500 pcs) with custom color trays and labels.
4. Superior Quality & Long-Term Reliability
   • ISO-Certified Production – Manufactured in ISO 9001 and ISO 14001 facilities to DIN 982 and ANSI/ASME B18.2.2 standards, ensuring precise hex flats, tooth geometry and thread accuracy.
   • Rigorous Validation Testing – Every lot undergoes ≥120 h salt-spray (ASTM B117), 5 000 prevailing-torque cycles and ultrasonic inspection to verify coating adhesion, tooth retention and fatigue life.
   • Vibration & Thermal Resistance – Star-tooth design maintains clamp load and resists self-loosening under dynamic vibration (10–500 Hz) and thermal cycling from –40 °C to +120 °C.
   • Environmental & Safety Compliance – RoHS-, REACH- and WEEE-compliant; free of hexavalent chromium and other restricted substances, delivering decades of maintenance-free, corrosion-resistant performance in indoor or outdoor settings.