Abstract: A screw band of an elongate tape shape having one or two longitudinal sides provided with transporting notches space apart equidistantly, screw holes spaced equidistantly through its thickness, four spaced notches provided around the wall defined by each screw hole, a circumferential wall extending down from the round screw hole wall and having a cone shape or an annular shape, an annular small diameter wall extending down from the circumferential wall, the cone-shaped wall conforming to a sloping wall of a head of a screw for said screw head to rest on an inner surface of the cone-shaped wall, the annular wall having an inner hole just sized only a little larger than a threaded rod portion of the screw to fit through.

Abstract: An automatic screw-driving device including a sliding box and a sprocket to move a screw belt through the sliding box, the sprocket being locked at one of various positions to keep a screw on the screw belt at a secured position for a driver rotated by an electric motor to fix in something, the sprocket being rotated by a shaft rotated by pulling the sliding box forward and backward forcing an orienting rod to move along in a non-straight groove in the shaft fixed through a side wall of the sliding box contained in a housing so that the shaft is rotated.