5/16"-18 x 3/4" Rubber Coarse Thread Well Nuts

Diameter: 5/16"
Length: 3/4"
Material: Rubber
Thread Size: 18 (Coarse)
Type: Well Nut

Box of 12.

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.