Prevent loosening under vibration with Jameco's popular hardware metric washers. Made of plastic, steel, brass, and aluminum, our stock of washers are available in various sizes. Also check out the M9 Assembly Hardware kit which includes 2 hex nuts and 1 flat washer for M9 sized screw. Jameco is the only electronic components distributor to give customers a true choice. Jameco offers more than 50,000 of the industry's most popular name brand components, all at competitive prices.