3/8″-16 x 1″ Rubber Coarse Thread Well Nuts (3 pcs.)
Diameter: 3/8″ Length: 1″ Material: Rubber Thread Size: 16 (Coarse) Type: Well Nut Box of 3. A well nut is a type of fastener used to blindly fasten a piece 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 onto the nut from the flanged end.