Hilti Aktiengesellschaft

Hilti Aktiengesellschat

Franz-Xaver Huber

Michael Werner

Josef Glogger

Hubert Forster

Juergen Wieser

Jan Allaart

Jürgen Wieser

A fastening element for hard constructional components such as concrete, masonry, and the like, includes a cylindrical base body () having an inwardly located engagement element () for the setting bit and formed as a through-opening () in the bottom section () which is provided at the first end of the base body, a receptacle () opening toward the second end (), remote from the first end and adjoining the engagement element () in a direction toward the second end (), and provided with load application means (); and a self-tapping thread () provided, at least regionwise, on an outer surface () of the base body ().

Fastening element for hard constructional components

A fastener is formed of an axially extending shaft ( ) and a driving head on the end directed away from the setting direction, and has on its underside or first side ( ) for the prevention of unintended loosening, a plurality of webs ( ) extending radially from the longitudinal axis (L) of the shaft up to the external periphery ( ) of the underside ( ). The webs ( ) having a substantially trapezoidal cross-section, are limited by a face surface ( ) on the underside ( ), extending between two flank surfaces.

Fastener driving head

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Guenzlhofen, Germany

Franz-Xaver Huber