DIN6795 French Grounding Washer

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1. High-Conductivity, Vibration-Resistant Performance
   • Manufactured to DIN 6795 from quenched-and-tempered alloy/carbon steel (typical hardness 38 – 45 HRC), the double-arched ring stores elastic energy that presses its circumferential teeth firmly into both mating surfaces. This combination supplies prevailing torque to stop back-off and forms a gas-tight electrical path for grounding or bonding.
   • A ≥ 8 µm electro-zinc layer sealed with trivalent passivation protects the base metal through 120 h neutral salt-spray (ISO 9227); optional clear, yellow, black, olive, or custom RAL/Pantone top-coats extend corrosion life past 1 000 h while offering instant circuit or size coding.
   • Tooth geometry (≈ 60 ° flank, 0.25 – 0.45 mm height in M3 – M10 sizes) delivers contact resistance below 20 mΩ after 1 000 thermal cycles (–40 °C → +120 °C) and retains ≥ 88 % of initial clamp force after transverse-vibration (Junker) testing.
   • Hydrogen-relief baking follows plating to prevent embrittlement and maintain full tensile strength for safety-critical joints.
2. Broad, Cross-Industry Application Spectrum
   • Electrical Panels & Switchgear: Bonds door skins, hinge leaves, and bus supports, preventing electrostatic build-up or EMI leakage.
   • Renewable-Energy, EV & Rail: Grounds inverter housings, battery enclosures, and signal boxes exposed to continual vibration and outdoor weather cycles.
   • Construction Machinery & Off-Road Vehicles: Ensures reliable earth continuity across painted chassis parts, engine mounts, and sensor brackets subject to shock loading.
   • Automation, Robotics & General Manufacturing: Locks and bonds control-cabinet backplanes, cable trays, and servo-motor mounts where compact height and fast assembly are essential.
3. Installer-Friendly, Time-Saving Handling
   • Symmetric arched profile self-centres under screw or nut faces, eliminating orientation guesswork and speeding blind, overhead, or gloved installation.
   • Spring action compensates for paint thickness, plating build-up, gasket creep, and thermal expansion, so technicians apply the same torque used with a plain washer—no recalculation or special tools.
   • Low added stack height (0.5 – 1.1 mm) means most retrofits require neither longer fasteners nor deeper counterbores.
   • Colour-coded finishes and optional laser-etched size marks (≥ M4) simplify visual sorting on mixed-size assembly lines or in maintenance kits.
4. Verified Quality & Long-Term Durability
   • 100 % optical and mechanical inspection confirms tooth height ± 0.02 mm, arch depth ± 0.05 mm, concentricity ≤ 0.05 mm TIR, and spring rate; statistical Cp/Cpk ≥ 1.33 records support ISO 9001, IATF 16949, and AS 9100 systems.
   • Duplex-coated variants (zinc + epoxy powder) withstand 1 000-h xenon-arc weathering without flaking or colour shift, ideal for outdoor or mildly chemical environments.
   • Every production lot is QR-coded for traceability back to melt chemistry, heat treatment, plating bath, and inspection report, ensuring full supply-chain transparency.
   • Proven through cyclic vibration, temperature-swing, and salt-fog testing, these washers deliver decades of dependable grounding and anti-loosening protection across demanding industrial settings.