304 Stainless Steel DIN25201 Double Deck Wedge Self Locking Washer Gasket Loose Proof

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1. Superior Self-Locking, Anti-Vibration Performance
   • Manufactured to DIN 25201 from cold-headed 304 stainless steel, the paired washer faces feature opposing 30° wedge cams that generate a rise angle steeper than the thread pitch; when loosening forces act, the cams convert rotation into clamp-load increase, preventing back-off even under 22 g RMS vibration.
   • Radial ribs on the outer surfaces bite into mating materials (steel class 8.8–12.9, aluminium, composites) at clamp loads as low as 80 MPa, eliminating the need for serrated flanges or thread-locker fluids.
   • Austenitic stainless construction provides ≈ 700 MPa tensile strength and maintains full ductility from −200 °C to +400 °C, while a passivated chromium-oxide film resists salt spray, de-icing chemicals, mild acids and aggressive wash-downs.
   • System complies with Junker transverse-vibration test per DIN 65151, retaining ≥ 90 % of initial preload after 1 000 cycles and allowing unlimited bolt re-use without prevailing-torque degradation.
2. Broad, Cross-Industry Application Spectrum
   • Transportation & Mobility: Secures brake calliper adapters, chassis brackets, and battery modules in passenger vehicles, rail stock, motorcycles and e-bikes exposed to cyclic shock and temperature swings.
   • Renewable Energy & Heavy Equipment: Locks nacelle covers, blade-root studs, and hydraulic manifolds on wind turbines, solar trackers, and earth-moving machinery where maintenance access is costly.
   • Automation, Robotics & Precision Machinery: Prevents micro-movement on rotary tables, linear-guide carriages, and pick-and-place heads, safeguarding positional accuracy during high-cycle duty.
   • Marine, Offshore & Chemical Processing: Stainless construction and non-permanent locking suit pump flanges, valve covers, and deck hardware exposed to chloride-rich or corrosive atmospheres.
3. Technician-Friendly, Time-Saving Handling
   • Supplied as pre-assembled, paired discs with matched cam orientation—no need to align individual washers in the field. Simply place under the bolt head or nut; installation torque values remain identical to plain-washer joints, simplifying tool-setting.
   • Directional “↑” mark indicates the side facing outwards; tactile ribs allow confident placement when gloves or low light impede visual inspection.
   • Low profile adds only 2 mm stack height on common M6–M20 sizes, fitting tight clearance envelopes without redesigning bolt lengths.
   • Available loose in 50-piece cartons, pre-staged on captive sleeves, or tape-and-reel for robotic assembly lines, integrating smoothly with manual benches and automated feeders alike.
4. Verified Quality & Full Traceability
   • Each production lot undergoes 100 % optical inspection for cam height ± 0.02 mm, surface hardness 350–395 HV (after work-hardening), and outer-rib depth ≥ 0.2 mm; Cp/Cpk results archived for ISO 9001, IATF 16949, and AS9100 reporting.
   • Passivation per ASTM A967 followed by optional electropolishing achieves Ra ≤ 0.4 µm for hygienic or decorative requirements without altering locking performance.
   • Stainless base material meets the latest RoHS 3 and REACH directives; full PPAP Level 3 documentation and 3.1 material certificates available on request.
   • QR-coded labels on every package link washers to melt lot, dimensional map, and Junker-test data, ensuring end-to-end transparency for safety-critical infrastructure, aerospace tooling, and medical-device assemblies.