Abstract: Sheet metal nails (2) are linked side-by-side with each other in a metal strip (1), the nails being parallel to each other and extending at an angle to the longitudinal direction of the strip from one lateral edge of the strip to the other opposite lateral edge. Each sheet nail (2) has a profiled nail shank (4) having at one end a head (5), a transition portion between the profiled shank (4) and the nail head (5) comprising a relatively gently curved portion (7) which is also profiled, the head being also profiled and no wider than the shank. The nail end remote from the head has a penetration portion with at least one point. The profiling of the nail shank (4), the curved portion (7) and the head (5) is such that these portions have substantially the same cross-sectional shape, the sheet metal in the nail being of substantially uniform thickness.

Abstract: A clinchnail having an elongated shank with a head at one end and a tip portion at the other end thereof, wherein the shank is of essentially constant cross-sectional configuration throughout its length and the tip portion has a cross-sectional configuration differing from that of the shank, said tip portion being laterally offset from said shank with respect to the longitudinal axis of the shank.

Abstract: An expanding wire nail for fastening baseboards and the like to concrete walls has two aligned shank segments integrally joined by a ligament of cruciform cross-section forming a weakened zone between oblique wedge faces on the adjacent ends of the shank segments. The ligament and the wedge faces are formed by plastic deformation of the shank from opposite sides in a forming die assembly. The forming die assembly has opposed forming punches driven in phase opposition, each forming punch being driven in unison with one of two aligned tip cutting punches.