APPLY TO - Hex head bolts can be widely used in home and office appliances, communication equipment, ship assembly, and other machinery industry.DESIGN - Hexagon bolts are fully threaded. Threads are well-machined and accurately cut. Sharp, smooth, speeding up the fastening process in many applications, meeting all demands.ADVANTAGE - Our bolts are made of carbon steel, high hardness, and non-deformation. The surface treatment is zinc-plated to improve corrosion resistance and rust prevention properties, and a long service life.