The Hillman Group 829400 14 by 20-Inch Stainless Steel Hex Jam Nut 100-Pack

Product Description A jam nut is a low profile nut, half as tall as a standard nut. Used as a type of locknut where it is jammed up against a standard lock nut to lock the two in place. Also used where a standard nut would not fit. From the Manufacturer A jam nut is a low profile nut, half as tall as a standard nut. Used as a type of locknut where it is jammed up against a standard lock nut to lock the two in place. Also used where a standard nut would not fit.