1/2-13 IN Slotted Hex Nut Coarse - Plain Aluminum
Often referred to as castle nuts, secure these slotted hex nuts 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. Made from aluminum and designed for low strength applications. Fine threads are closely spaced to prevent loosening from vibration.