Stainless Steel Flange Nuts 5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304 Serrated Flange Lock Nuts 【Product Size】Thread Size: 5/16-18; Thread Pitch: 18 TPI., Nuts Diameter: 0., 56; Nuts Height: 0., 27; Flange Diameter: 0., 67; Hex Drive Size: 0., 5. Find Hex Flange Lock Nut: 5/16-18, Grade 304 Stainless Steel at MSC Industrial Supply, serving the metalworking, safety, and MRO industries for over 75 years 【Value-Packed and Convenient】This package of Stainless Steel Flange Nuts comes with a generous 50 count, making it perfect for use at home, work, or in the office. Flange Nuts have flat and serrated designs designed to act as an integrated, non-spinning washer, eliminating the need for a separate washer. Serrated flange nuts are fabricated with a built in serrated washer that resist loosening due to vibration Package Included: 50 PCS 5/16-18 Serrated Flange Hex Lock Nut 5/16-18 Stainless Steel Flange Hex Nuts 25 Pack 25-Pack 5/16-18 Flange Hex Nuts - 316 Stainless Steel NL-19 Finish For General Use Hex Nuts 3/8-16 【Built to last】INCONTESTA Flange Nuts are constructed with top-quality 18-8 (304) Stainless Steel, offering superior corrosion resistance and rust prevention compared to standard nuts.