Specifies the dimensions and certain other properties of endless wedge belts and V-belts and their corresponding grooved pulleys for power transmission. Appendices provide recommended power ratings, information on and examples of design of belt drives, as well as recommendations on installation and storage. Methods of determination of electrical resistance and fire-resistance properties are also provided in the appendices. Does not apply to industrial variable speed drives employing pulleys with movable flanges and does not contain performance test data regarding power transmission.