1. Belleville disc springs and washers are designed to din 2092 and manufactured to din 2093. 2. Depending on the spring dimension the load deflection curve can be linear, regressive or progressive. 3. Optimal use of space and utmost spring load with minimum deflection (very high loads in the smallest of spaces). 4. Considerable dampening especially when stacked. 5. Minimal relaxation occurs provided the permissible stress is not exceeded. Cartons and plywood pallets