These are used for locking a device and reducing the vibration. They reduce loosening by preventing unscrewing rotation of the fastening device; locking washers are usually also spring washers.
Washers are available in a wide range such as spring washers, star washers, multi-tooth washers, disc spring washers, wave washers, taper washers, safety washers etc.
Conical Spring Washers DIN 6796 Product Code: B4D20
A Conical spring washer designed to help prevent loosening of bolted joints under vibration. This type, manufactured to DIN 6796 has an inherent conical shape. It is also known as a Belleville washer, disc spring, coned-disc spring and cupped disc washer.
Disc Spring Washers – DIN 2093
Known by many different names, this washer is a type of spring shaped like a washer. Disc Washers are loaded in the axial direction, either dynamically or statically. They offer well-developed solutions to many engineering problems. Through a unique combination of high force in a small space, the disc can be used single or arranged in stacks.