This configuration is not available. Make another selection.
Teckentrup Large OD NSK-B Belleville Washer - Steel Zinc Flake
The NSK-B is Teckentrup���s high-performance locking washer designed for high pre-load, high-strength bolted connections, even in slotted holes.
Suited for applications with strength classes up to 12.9 and is ideal when you need both force transmission and anti-loosening in heavy-duty assemblies.
Key Features & Benefits
Engineered spring geometry ensures a defined, constant coefficient of friction, enhancing repeatability under load.
Supports high pre-load forces with optimal residual spring behavior, especially for strength classes 10.9 and 12.9.
Incorporates a locking element that resists self-loosening without damaging adjacent surfaces.
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
Railways, elevator systems, mechanical engineering, heavy machinery, structural steel, and any bolted joints demanding durability, high pre-load, and anti-loosening safety
