Nail fastener assembly

Details Nail fastener assembly Nail fastener assembly

B - Operations, Transporting

25

C

B25C 5/10 (2006.01) B25D 1/10 (2006.01) F16B 19/14 (2006.01) F16B 43/00 (2006.01)

Patent

CA 2081492

A nail fastener assembly for attaching thin metal sheets includes an axially extending nail with a comically shaped shank having ballistic-like tip at its leading end and a head at its trailing end. A disk is fitted on the leading end of the shank with a sleeve secured on the shank between the disk and the head. When the nail is driven by a setting tool, the sleeve acts on the disk in the region of the tip, so that the transmission of all forces acts on an annular radially outer surface on the leading surface of the disk. The leading end surface of the disk has a radially inner comically shaped first recess and an annular second recess encircling the outer edge of the first recess and spaced inwardly from the radially outer edge of the disk. Accordingly, the radially outer contact surface bears against the metal sheet being attached and provides high transverse stresses.

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