MOUNTING HOLE CAP AND MOTION GUIDE APPARATUS

A mounting hole cap for a motion guide apparatus is provided which is capable of suppressing formation of burrs and securing a holding force and a removal force. A mounting hole cap of the present invention includes a lid portion and a fitting portion. The fitting portion includes a first fitting portion and a second fitting portion, which are placed in a circumferential direction. A slit is formed between the first fitting portion and the second fitting portion. The first fitting portion is formed with a protruding portion that comes into contact with an inner surface of a mounting hole. An outer diameter of the protruding portion of the first fitting portion is greater than an outer diameter of the second fitting portion.