Hexagon Slotted Castle Nut Standard: DIN 935, Steel Locknut for Use with Cotter Pins，Metric Medium-Strength Steel Locknuts for use with Cotter Pins—Class 8，
Often referred to as castle nuts, secure these by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance. They’re not recommended for use on parts exposed to high vibration because the pin is prone to shearing under prolonged stress. Height includes the slots. Cotter pins are not included. They're zinc plated to resist corrosion in wet environments.
Size: M10 up to M56
Material: Steel and Stainless steel 18-8 and A4