Hat-shaped fixing element as well as sheet metal part, with at least a hat-shaped fixing element, a process for producing a hat-shaped fixing element as well as tool for its production

摘要

The component (10) contains a bore(1), either tapped (24) or with a bayonet coupling, and closed by a transverse wall (14)at one end. It also incorporates a rivet portion (36). A stopper (50) of ductile material, typically plastic, seals the bore at the other end, being secured in the distorted state to a seat inside it. The stopper can be thrust inwards. The component can form a cap nut, the stopper engaging with the thread at the inlet end for between one and two and a half turns, but not filling it completely. There can be a pot-shaped recess (58) in the stopper towards the inside, with a slightly concave-curved bottom (60). ADVANTAGE - Is effectively protected against choking or damage during subsequent operations such as sandblasting, dip-varnishing etc.