DIN433 Carbon Steel Flat Washer

描述

1. Space-Saving, Corrosion-Guarded Load Distribution
   • Produced to DIN 433 Form A from cold-rolled medium-carbon steel (140 – 200 HV), these small-OD washers sustain compressive loads above 45 kN on common M8 assemblies without cold-flow or edge collapse.
   • A uniform ≥ 8 µm zinc layer sealed with trivalent chromate yields ≥ 120 h neutral-salt-spray resistance (ISO 9227). Clear, yellow, black, olive, rainbow or any specified RAL / Pantone powder top-coat can be added for visual coding while preserving tolerances.
   • Compared with DIN 125, the outside diameter is about 20 % smaller, enabling placement inside counterbores, narrow slots and tight recessed seats where standard washers collide with surrounding features.
   • Precision thickness control (± 0.05 mm on M2–M12) spreads clamp load uniformly, cutting surface embedment by up to 60 % versus a bare screw head and protecting painted, anodised or plastic components from gouging.
2. Versatile, Cross-Industry Application Spectrum
   • Electronics & Precision Instruments: Levels clamp forces on PCB standoffs, sensor housings and miniature gearboxes without intruding into component keep-out zones.
   • Automotive, Powersports & Mobility: Protects aluminium brackets, battery trays and steering-stem joints in motorcycles, ATVs, e-bikes and passenger-vehicle interiors exposed to vibration and road splash.
   • Machinery, Robotics & Automation: Secures actuators, linear-guide carriages and end-effector plates, maintaining alignment during high-cycle duty while colour finishes aid rapid size recognition on busy lines.
   • Construction, Renewable-Energy & Outdoor Fixtures: Separates dissimilar metals in solar-panel frames, HVAC mounts and wind-turbine nacelles, mitigating galvanic corrosion and blending with architectural colour schemes.
3. Installer-Friendly, Time-Saving Handling
   • A 0.2 mm ID chamfer lets washers slide effortlessly over threaded studs, expediting assembly in blind, overhead or gloved operations.
   • Flat-lay geometry prevents wobble on magnetic sockets and pick-and-place nozzles, boosting production throughput by up to 15 %.
   • Supplied bulk-packed, in resealable field pouches, or on tape-and-reel strands—ready for manual benches, maintenance kits and automated feeders alike.
   • Optional laser-etched size marks (from M3 upward) enable quick visual sorting without calipers, reducing kitting errors on multi-size workstations.
4. Proven Quality & Full Traceability
   • Every lot receives 100 % optical inspection for burr height < 0.03 mm, OD / ID concentricity ≤ 0.05 mm TIR and hardness compliance per ISO 4042; Cp / Cpk data are archived for ISO 9001 and IATF 16949 records.
   • Surfaces are shot-blasted to Ra ≤ 1.6 µm before plating, lowering friction and easing future disassembly; duplex coatings for > 500 h salt-spray life can be specified on request.
   • Powder-coat overlays pass 1 000 h Q-SUN xenon colour-fast tests, ensuring durable identification in harsh UV or chemical environments without altering dimensional class.
   • QR-coded labels trace each washer to its melt lot, plating bath and inspection report, guaranteeing end-to-end supply-chain transparency for critical infrastructure, medical devices and aerospace tooling.