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- DIN6796 Belleville Washer
DIN6796 Belleville Washer – High-Force Bolt Preload
About the Product
The DIN6796 Belleville Washer is a specific type of conical spring washer designed exclusively for use with bolts and screws. Unlike standard flat washers, its conical shape provides a high spring load to secure the bolted connection against loosening caused by vibration, thermal cycling, or material creep (relaxation). The dimensions and performance of these washers strictly adhere to the German Industrial Standard DIN 6796.
- Guaranteed compliance with the DIN 6796 standard.
- Designed to provide consistent tension for high-strength bolts (Class 8.8 to 10.9).
- Exceptional resistance to relaxation and material creep.
- Highly effective in securing connections under dynamic and vibrating conditions.
These washers are indispensable in industries like automotive, heavy machinery, and construction where the safety and stability of bolted joints are paramount. They work by maintaining the clamping force (preload) on the bolt, acting as a small, high-force spring that absorbs any minor loss of tension in the joint. They are engineered to last, with a typical service life exceeding one million cycles under correct preload conditions.
Technical Specifications
Bolt Compatibility: Designed for high-strength bolts (M3 to M36) in property classes 8.8, 10.9, and 12.9.
Standard Sizes: Outer diameters from 6 mm to 72 mm; Thickness from 0.5 mm to 5 mm (depending on bolt size).
Material Grades: 50CrV4 (Standard Spring Steel), Stainless Steel (e.g., A2, A4), Inconel (for high-temperature needs).
Axial Force Rate: Very high stiffness, typically 50–400 N/mm to compensate for bolt relaxation.
Finishing: Black oxide, phosphate and oil, or mechanical zinc plating for corrosion resistance.
Tolerance: Strictly adhere to DIN 6796 tolerances for consistent performance.
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