Back Home / Fasteners / Nuts / AUVECO WELL NUT 1/4-20 BULK 2000 PER BOX AUVECO WELL NUT 1/4-20 BULK 2000 PER BOX SKU: XA13010B Categories: Fasteners, Nuts A well nut is a type of fastener used to blindly fasten a piece (much like an molly bolt) and to seal the bolt hole. It consists of a flanged neoprene bushing with a nut embedded in the non-flanged end. The bolt is passed through one of the pieces to be fastened and threaded on to the nut from the flanged end. The non-flanged end is then inserted through the other piece to be fastened. As the bolt is tightened, friction from the neoprene flange against the piece being fastened prevents the nut from turning. The bushing is compressed by the nut, forming a lip behind the piece being fastened, which compresses the fastened piece and seals the bolt hole. Well nuts are not particularly strong, but are useful for sealing holes and/or isolating vibrations. 1/4″-20 threads. Case Quantity: 100 Log In For Pricing