M8 Castle Nuts (DIN 935) - A2 Stainless Steel Castle Nuts are commonly used within the automotive industry and, when staked with a pin, may be utilised as a locking nut. The crenels on the crown of this nut both give it its name and provide a space for the cotter\/split pin to be inserted through. Once Castle Nuts have been secured with a pin, they become locked in place and resistant to tightening or loosening. As a result, Castle Nuts are also reusable unlike some other locking nuts. These Castle Nuts are made from A2 Stainless Steel which provides corrosion and oxidation resistance. For larger quantities or items not listed, please email and one of our team will provide you with a quotation. M8 Castle Nuts (DIN 935) - A2 Stainless Steel