Midwest Fastener 12mm x 21mm Plain Class 10 Steel Lock Washers

The purpose for a lock washer is to prevent threaded fasteners from loosening by creating friction between the fastener and the mounting surface. As the industrys most trusted fastener supplier, Midwest Fastener has earned a reputation for delivering a complete line of high-quality bulk and construction fasteners to meet consumer needs. Contractors and DIYers alike have come to depend on Midwest Fastener to provide them with the critical parts and fasteners necessary to ensure the success of their projects.