SWEBOLT & BOTNIA BOLT supply steel hex bolts with inch threads (UNC/UNF) manufactured according to ANSI B18.2.1. Available in strength classes 8.8 and 10.9, with plain, zinc-plated (ZN) or hot-dip galvanized (HDG) finishes. Used in industrial assemblies, machinery, and construction where inch-thread fasteners and accuracy are required.