Metric DIN 137 Type A and B Spring Lock Washers are specialty spring lock washers â€“ Unlike standard split helical spring lock washers, the DIN 137 lock washers are uninterrupted formed disks in either a curved or waved configuration that are non-directional allowing the screw and or nut to be tightened in a clockwise or counter-clockwise manner. When compressed by tightening the nut, the DIN 137 lock washers exert a spring force between the tightened bolt and the substrate creating frictional resistance to rotation. Aspen Fasteners offers over 500,000 unique fastener products from stock in inch and metric standard in a variety of materials and finishes. The following sizes of DIN 137 Type A and B Spring Lock Washers are available for immediate shipping from stock: Diameters ranging from M2 to M36 in steel and stainless steel A2 and A4. View parts by clicking on the following link: DIN 137 Type A and B Spring Lock Washers.
To view the full specification and standard sheet with dimension, material, weight and mechanical properties click on the link at the top of page