DIN127 High Grade Alloy Steel Lock Washer-Split Lock Washer Lock Metal Washer

description

1. High-Strength, Anti-Loosening Performance
   • Manufactured from quenched-and-tempered alloy/carbon steel rated ≥ Class 8.8 (optionally 10.9 / 12.9), the helical split ring exerts a sustained spring load that presses its sharp ends into the bearing surfaces, blocking rotation caused by vibration, shock, or thermal cycles.
   • Through-hardness 39 – 46 HRC (≈ 370 – 470 HV) supplies the resilience needed to maintain preload even under yield-grade bolts; the elastic deflection window of 0.10 – 0.35 mm (M3 – M24) compensates for joint settling and gasket creep.
   • A ≥ 8 µm electro-zinc layer, sealed with trivalent passivation, survives ≥ 120 h neutral salt-spray (ISO 9227); optional clear, yellow, black, olive, or custom RAL/Pantone top-coats extend protection past 1 000 h while enabling visual torque-path coding.
   • Conforms to DIN 127 / ISO 8752 split-lock geometry and retains ≥ 88 % of initial clamp force after 1 000 Junker transverse-vibration cycles in independent laboratory testing.
2. Broad, Cross-Industry Application Spectrum
   • Heavy Vehicles & Off-Road Equipment: Guards suspension brackets, axle covers, and hydraulic manifolds against extreme road shock and dynamic loads.
   • Energy, Construction & Mining: Locks structural joints on wind turbines, solar trackers, crushers, and scaffolding where service access is costly and downtime critical.
   • Industrial Machinery & Robotics: Secures gear-case covers, sensor mounts, and guard plates that endure high-cycle duty, rapid reversals, and impact loading.
   • DIY, Maintenance & Fabrication Kits: Provides reliable anti-slip fastening for workshop jigs, metal framing, and outdoor fixtures exposed to weather or chemical splash.
3. Installer-Friendly, Time-Saving Handling
   • Fits beneath standard hex heads or nuts with no orientation marks required; installers use the same torque values specified for plain washers, avoiding recalculation or special tooling.
   • Chamfer-free coil ends reduce burrs, allowing smooth feeding through magnetic sockets, screw presenters, vibratory bowls, or pick-and-place nozzles.
   • Adds only 0.6 – 1.6 mm stack height (size dependent), enabling retrofit without longer bolts or redesign of counterbores and recesses.
   • Delivered loose in cartons, resealable field pouches, or tape-and-reel strands for seamless integration with toolbox kits, line-side bins, and automated assembly cells.
4. Verified Quality & Long-Term Durability
   • 100 % inspection checks free height, gap width, hardness, concentricity ≤ 0.05 mm TIR, and spring rate; statistical Cp/Cpk ≥ 1.33 records are archived for ISO 9001, IATF 16949, and AS 9100 compliance.
   • Post-plating bake mitigates hydrogen embrittlement, preserving tensile integrity for safety-critical joints.
   • Duplex-coated variants (zinc + epoxy powder) pass 1 000-h xenon-arc weathering without flaking or colour shift, supporting outdoor, marine, or mildly corrosive chemical environments.
   • Lot codes on QR-labeled packaging trace each washer to melt chemistry, heat-treat batch, plating bath, and inspection report, ensuring end-to-end transparency for aerospace, medical-device, and infrastructure projects.