Non-removable safety pin

摘要

A non-removable safety pin 20 for an excavator couple comprises a head 26, a shaft 24, a distal end 22 and a longitudinal axis starting at the head 26, extending along the shaft 24, and terminating at the distal end 22, wherein either or both of the shaft 24 and the distal end 22 are keyed so as to have an element thereon that extends relative to the side of the shaft 24. The element prevents removal of the safety pin 20 from a hole 36 in which the safety pin 20 is inserted. The shaft 24 may have one, two, three or more flat sides or faces 34 wherein there may two or more sides that are positioned at different radial distances away from the longitudinal axis of the safety pin 20. The distal end 22 of the pin 20 may have flat sides and the element may be in the form of a shoulder 32 between a distal tip of the safety pin 20 and the shaft 24.