This retainer clip comes in handy when you need a light-duty safety lock fastener. It is reusable, vibration-resistant, and quick and easy to fasten and remove. This Military Specification retainer is formed from 0.052 inch diameter high tensile strength spring wire. The grip capacity is 0.75 inch at a maximum depth of 0.15 inch. In other words, it can be fastened through a cross drilled hole in a 0.75 inch diameter shaft up to 0.15 inch in from the end of the shaft. Because of the relatively small wire diameter, it should not be used in applications that would subject it to high shear loads.