This 146-piece Nyloc Nut Assortment contains a variety of sizes including 35 x M4, 35 x M5, 25 x M6, 25 x M8, 16 x M10, and 10 x M12. These locking nuts feature a nylon collar that binds with the male thread to prevent loosening, often referred to as nyloc nuts. They are manufactured from zinc plated steel in accordance with DIN 985 and supplied in a plastic storage case. The assortment provides a range of different sized locknuts with rubber insides which prevent the fastener from coming loose by absorbing vibration and locking the nut. The set comes in a handy compartment case to keep the nuts safe and organised. This product offers more resistance than regular nuts and is available in M4, M5, M6, M8, M10, and M12 sizes.