Method for supplying sliders

A slider having an outer guide that closes a zipper by sliding movement of the slider and an inner guide that opens the zipper by the sliding movement and is formed revolvable on the outer guide. A method for supplying sliders provides sliders that are not entangled with each other and are not clogged when supplied with the inner guide revolved to the outside. The slider has a groove formed by the inner guide protruding upwards from the upper surface of a slider body. A flat guide plate disposed between a slider supplying machine and a slider assembling machine engages with the groove so that the upper surface directs in a vertical direction and, at the same time, side surfaces of adjacent sliders support the slider facing each other in a hanging down condition, and align and guide them in a line in a fixed direction.