Patent ID: 8894334
Filing Date: 2014-11-25
Classification: B21H,F16B,Y10S

Abstract:
1. A fastener assembly comprising: a male threaded fastener having a head, a shank with a distal end, a non-tapering unthreaded shank portion beneath said head, a fastening thread and a helical ring on said shank, said fastening thread disposed between said distal end and said helical ring, said helical ring being an extension of said fastening thread and said helical ring having at least one pitch; said fastening thread defining a first major diameter and said helical ring defining a second, single major diameter, said first major diameter being less than said second major diameter; and a female component configured to threadably receive said male threaded fastener therein and having an inward projection defining a restricted entrance greater than said first major diameter and less than said second major diameter.