Threaded fastener and structural joint attained therewith

Details Threaded fastener and structural joint attained therewith Threaded fastener and structural joint attained therewith

F - Mech Eng,Light,Heat,Weapons

16

B

85/87

F16B 25/00 (2006.01) F16B 33/00 (2006.01) F16B 35/00 (2006.01) F16B 39/28 (2006.01) F16B 39/282 (2006.01)

Patent

CA 1156070

ABSTRACT A structural joint is disclosed which is comprised of a relatively thin workpiece and an externally threaded fastener having a cup shaped flange with the workpiece being drawn into clamp engagement therewith. The cup shaped configuration of the flange opens toward the threaded shank of the fastener with the rim thereof partially overlaping the thread on the shank. The depth of the cup shaped configuration is shallow and is maintained at a predetermined depth such that upon attainment of the structural joint, the workpiece material is drawn interiorly of the cup shaped flange and into wedged engagement with the base surface of said flange to inhibit enlargement of the aperture in the workpiece.

362263

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