Continental-Aero, a leader in the lock-nut industry, stocks one of the largest lock-nut and fastener inventories in the U.S. Founded in 1948, Continental-Aero's signature purple-branded lock nuts continue to be an instrumental provider of nuts and bolts to the manufacturing and industrial communities of Illinois and beyond. The company places a special emphasis on customer service, seeking to develop a personal relationship with the clientele to ensure communication and quality control.