Overview Reviews Product Description Jam nuts are tightened against each other instead of against a material. They are about half of the size of a regular nut. Bare finish fasteners have low corrosion resistance and are a good choice for indoor and industrial applications. Papco Nuts Catalog Product Videos Custom Field Box quantity 50 Diameter 7/16"-20 Plating Bare Product Reviews Write a Review Write a Review × Paulin 7/16"-20 UNF Bare Hex Jam Nut 50 Pc. 107-020 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *