... and wedge bolt is composed by rod ,wedge,plate,nut and so on ,have good bearing capacity ... support How to work Slot wedge rock bolt has five parts : wedge,rod,plate,spherical washer and nut .one ... be inserted in ,the other end has thread for hold plate ,washer , and nut . After drilling the borehole , ... slit and install other accessories , push the whole rock bolt into the end of borehole, drive external ...