A method of manufacturing or forming the threaded fastener is described whereby a tough, ductile fastener is shown having superior reciprocal or mating thread forming and cutting characteristics.R L * REYNOLDS
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The fastener of the invention is fabricated by rolling a specially designed blank between a pair of standard thread rolling dies.EGNER R J
seen to produce sjelvgengande festelement and matrices for implementation of set1376586 Self-tapping screws; rolling USM CORP 23 May 1973 [24 May 1972] 14732/74 Divided out of 1376585 Headings B3N and B3M A self-tapping threaded fastener comprises a cylindrical shank portion 12, a tapering ...
A thread forming screw has a tapering lead end from which helical threads extend with a uniform root diameter onto a cylindrical shank. Proceeding from the tip of the lead end, there are progressively higher discontinuous thread crests in the form of pyramidal elevations that merge into a ...
The hardening of the crest of the bolt thread may be by electrode arc deposition of titanium carbide or tungsten carbide.R L * REYNOLDS
A method of manufacturing or forming the threaded fastener is described whereby a tough, ductile fastener is shown having superior reciprocal or mating thread forming and cutting characteristics.R L * REYNOLDS
The hardening of the crest of the bolt thread may be by electrode arc deposition of titanium carbide or tungsten carbide.REYNOLDS R L
A method of manufacturing or forming the threaded fastener is described whereby a tough, ductile fastener is shown having superior reciprocal or mating thread forming and cutting characteristics.R L * REYNOLDS