Home / Screws, Nuts & Washers / Setscrews/Bolts / Hexagon Bolt (Part Threaded) / UNF Hexagon Bolts - ASME B18.2.1 UNF Hexagon Bolts - ASME B18.2.1 UNF Hexagon Bolts - 8.8 Self Colour Steel UNF Hexagon Bolts - 8.8 Bright Zinc Plated Steel