Serrated Flange Hex Nut Locknuts Carbon Steel Yellow Zinc Plated DIN6923

描述

1. High-Strength, Anti-Vibration Performance
   • Forged from heat-treated medium-carbon steel to Property Class 8 (≈ 800 MPa tensile), each serrated flange nut withstands heavy clamp loads without thread shear or flange distortion.
   • Radial serrations on the 120 ° integral flange generate prevailing-torque resistance up to 1.6 N·m per millimetre of thread diameter, locking the joint against shock, vibration, and thermal cycling—no extra spring washer needed.
   • A factory-applied ≥ 8 µm yellow zinc layer, sealed with hex-chrome-free passivation, provides ≥ 120 h neutral-salt-spray protection (ISO 9227). Optional clear, black, olive, or rainbow zinc, zinc-nickel, or zinc-flake coatings extend life beyond 500 h while enabling quick colour coding for maintenance zones or process stages.
   • ISO-metric Class 6H threads are roll-formed through the full nut height, increasing surface hardness and ensuring smooth, repeatable torque even after multiple service cycles.
2. Broad, Cross-Industry Application Spectrum
   • Automotive, Rail & Off-Highway Vehicles: Locks suspension brackets, exhaust shields, and chassis clips where dynamic loads and road vibration would loosen plain hardware.
   • Machinery, Robotics & Automation: Secures motor mounts, gearbox covers, and sensor frames, maintaining ground continuity and resisting micro-slippage on painted or plated base plates.
   • Construction & Structural Steel: Attaches guard rails, solar racking, and HVAC hangers; colour-matched top-coats simplify trade discipline identification on busy sites.
   • Agricultural, Marine & Renewable Energy Equipment: Fastens pump housings, winch bases, and turbine frames exposed to moisture, fertiliser splash, and salt spray, with duplex coatings preventing galvanic corrosion on dissimilar substrates.
3. Operator-Friendly, Time-Saving Handling
   • One-piece flange replaces separate washers, cutting component count and assembly time by up to 40 % in production lines or field repairs.
   • Chamfered lead-ins allow hand-starting in blind or overhead locations, reducing cross-thread risk and installer fatigue.
   • Standard hexagon profile works with all common spanners, sockets, and power drivers; the wide flange automatically centres on slotted holes to guarantee consistent seating without calibrated torque tools.
   • Supplied in ready-to-use 50-piece cartons—ideal for maintenance kits, vending machines, or Kanban replenishment—and compatible with automated pick-and-place feeders for high-volume manufacturing.
4. Verified Quality & Full Traceability
   • Every production lot undergoes 100 % optical inspection for flange concentricity ≤ 0.03 mm TIR, serration height uniformity, and burr height < 0.05 mm; statistical process data are archived for ISO 9001, IATF 16949, and PPAP Level 3 documentation.
   • Surfaces are shot-blasted to Ra ≤ 1.6 µm before plating, minimising galling and easing future disassembly.
   • Finish palette ranges from standard yellow zinc to custom RAL/Pantone powder overlays, supporting brand identity, visual torque inspection, or low-visibility requirements without affecting dimensional tolerances.
   • Each carton ships with RoHS 3, REACH, and material conformance certificates; QR-coded labels trace every nut back to its melt lot, guaranteeing end-to-end supply-chain transparency for critical infrastructure, aerospace tooling, and medical-device assemblies.