Threaded bush for e.g. retaining screw in surrounding material, has rib comprising insertion ramp in front end, where ramp varies cross-section geometry of retaining grips, and bush consists of reinforced plastic

摘要

The bush (1) has an axially running internal thread (5), and a molded outer contour anchoring the bush in a surrounding material. The outer contour has a radially outwards projecting and axially extending rib (3). Retaining grips (7) are arranged in an assembly direction before the rib and have a surface increasing outwardly and an undercut. The rib has an insertion ramp (9) in a front end, where the ramp varies cross-section geometry of the grips. The bush consists of reinforced plastic. The grips are arranged in series in an axial direction and are designed as circulating harpoon bars.