EscapeLauter › Screws & Bolts › 80 Pieces 1/4"-20 Flush Nut Inserts Wood Bolt Furniture Headless Screw in N. Features of insert nut: These threaded inserts are inserted into a pre-drilled hole by screwing in, in that case the external protrusions bite into the wood, preventing the nut from either turning or pulling out.
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