Nominal Size: 20mm
Inside Diameter: 20mm
Outside Diameter: 34mm
Thickness: 4mm
Material: Steel
Finish: Black Phosphate
Hardness: Class 10
Style: Medium Split
Type: Lock Washer
Specifications: DIN 127
Application: Nuts and Bolts
Box of 157.
The purpose for a lock washer is to prevent threaded fasteners from loosening by creating friction between the fastener and the mounting surface.
