Partially Threaded Hexagon Head Bolts / Screws, made from robust steel material. These Class 12.9 bolts feature a hexagon head for optimal driving features. The right-thread direction and metric thread ensure a secure fit for a range of applications. With a plain surface treatment, these bolts meet industry standards including ASME B18.2.3.1M, DIN 931, ISO 4014, NEN 1555, and NF E25-112.