Jack Nuts are threaded inserts that come in varying grip ranges that are designed for use with thin metal, fiberglass, and even soft plastics.
Well Nuts are flanged neoprene rubber bushings with a machine nut molded into one end.
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Part Number 29905
InstallationTool
www.tifco.com/products/29905
Part Number 85645
172-Piece Assortment with both Jack and Well Nuts along with the Jack Nut Installation Tool
Part Number 85646
151-Piece Assortment with Well Nuts and Stainless-Steel Machine Screws and Cap Screws
Part Number 85639
316-Piece Assortment with Well Nuts and Stainless-Steel Machine Screws and Cap Screws