Double Coil Spring Washer, 10 mm

A double coil spring washer is a double-helical, spring-like washer that, when compressed under a fastener, provides a continuous spring force to maintain tension and prevent loosening in assemblies subjected to vibration or thermal expansion/contraction. Unlike single-coil washers, its dual-coil design offers increased elasticity, a more stable spring force, and greater resistance to loosening, making it suitable for applications such as utility poles, machinery, and wooden assemblies.