SWEBOLT & BOTNIA BOLT supply hex bolts according to ISO 4014 and DIN 931, in property class 8.8 per ISO 898-1, with metric coarse thread (M). These partially threaded bolts provide higher strength under mechanical load and are commonly used in construction, industry, and maintenance. Available in several surface finishes including zinc-plated (ZN), hot-dip galvanized (HDG), and plain, for various environments and applications.