Wavy Washer M20 Black Steel (21x36x1.6) DIN 137
Wavy Washer
Lock Washer
Black
Spring Steel
Dia: M20
DIN: 137
A DIN137 refers to spring washers designed for light-duty anti-vibration and axial preload applications. They remain a standard choice for securing connections in sensitive assemblies. Form B (Wavy): The true "wavy" version, featuring three or more distinct crests and troughs.