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Teckentrup Small OD NSK-S Belleville Washer - Steel Zinc Flake
The NSK-S series have smaller outer diameters, optimized for lower-strength (< 8.8) bolted connections and applications with tighter space constraints. Ideal as a modern replacement for older locking washers (DIN 6798, DIN 127/128, DIN 6905) in lighter duty assemblies.
Key Features & Benefits
Tailored spring characteristics deliver stable residual force even at modest preload levels.
Offers a constant, reproducible coefficient of friction for predictable tightening behavior.
Includes a locking element to ward off self-loosening.
Material
Base material: Spring steel (C60), Hardness / strength: 430HV
Zinc flake coating offers high corrosion protection, with salt spray resistance over 720 h (ISO 9227).
Typical Applications
Light machinery, consumer goods, smaller structural assemblies, general mechanical fastening where full high strength washers aren't necessary but locking function is still required.
