Overview Reviews Product Description Hex nuts are used with a screw or bolt to fasten two or more parts. 18.8 stainless steel fasteners have excellent corrosion resistant qualities and are an excellent choice for general use and all outdoor applications. Papco Nuts Catalog Product Videos Custom Field Box quantity 50 Diameter 1/2"-20 Product Reviews Write a Review Write a Review × Paulin 1/2"-20 UNF 18.8 Stainless Steel Hex Nut 50 Pc. 5027-022 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *