Half Thread Galvanized Hex Bolt UNF Grade 12.9 22mm 40-400mm Length

These premium half-threaded hexagonal bolts are engineered for demanding structural applications, serving as reliable fire protection hardware and general construction fasteners. Manufactured from high-quality galvanized steel, these bolts offer superior corrosion resistance and durability, making them ideal for both indoor and outdoor projects. The UNF (Unified Fine) thread type ensures a precise, tight fit, while the Grade 12.9 specification guarantees exceptional tensile strength and load-bearing capacity, meeting rigorous ASTM standards including A307, A325, and G5. Whether used for connecting metal frameworks or securing heavy-duty assemblies, their robust design allows for easy installation and disassembly using standard hex wrenches or screwdrivers.