SPRING CHANNEL NUTS Plain Channel Nut Size (MM) x (H)Size (Inch) x (H)M6 X 6 MM1/4″ X 1/4″M8 X 6MM5/16″ X 5/16″M10 X 8MM5/16″ X 3/8″M12 X 8MM3/8″ X 3/8″ 1/2″ X 3/8″M12 X 10MM1/2″ X 1/2″M16 X 12MM5/8″ to 7/8″ X 3/8″ 5/8″ to 7/8″ X 7/16″ 5/8″ to 7/8″ X 1/2 Top Spring Channel Nut Size (MM) x. https://www.kova.in/spring-channel-nuts/