Crimped capped fastener

Abstract

A capped fastener is provided with two outer flanges and a groove therebetween. The cap is crimped around the first outer flange without covering the second outer flange. The end of the cap is crimped in a groove between the first and second outer flanges. A crimping tool and method of crimping are also provided for crimping the end of a cap into a groove between two outer flanges.

1 . A fastener with a crimped cap, comprising:
 a fastener body comprising a thread, a plurality of wrenching surfaces disposed along a top portion of the fastener body, a first outer flange disposed below the wrenching surfaces and extending outward therefrom, a second outer flange disposed below the first outer flange, and a groove disposed between the first and second outer flanges; and   a cap disposed over the wrenching surfaces and the first outer flange, an end of the cap being crimped around the first outer flange, the end being crimped in the groove between the first and second outer flanges, wherein a bottom portion of the fastener body comprising the second outer flange and the thread remains uncovered by the cap.   
     
     
         2 . The fastener according to  claim 1 , wherein the fastener body is a nut and the thread is an internal thread. 
     
     
         3 . The fastener according to  claim 1 , wherein the fastener body comprises a tapered nose below the second outer flange, the tapered nose being uncovered by the cap. 
     
     
         4 . The fastener according to  claim 1 , wherein the end of the cap is disposed radially inward from an outer surface of the second outer flange, and an outer surface of the first outer flange is equal or smaller in size than the outer surface of the second outer flange. 
     
     
         5 . The fastener according to  claim 1 , wherein the cap covers a top end of the fastener body. 
     
     
         6 . The fastener according to  claim 1 , wherein the cap is made of stainless steel, the cap covers a top end of the fastener body, the fastener body is a nut and the thread is an internal thread, and the fastener is an automotive wheel fastener.