1538896 refers to a part number for a socket head shoulder screw from Bossard Group. The part is a metric low head socket shoulder screw, M8 x 45mm, which is made from steel, has a tensile strength of 8.8, and a black phosphate finish. The socket head design allows a hex or Allen key to be used to drive into the fastener, making it suitable for a range of applications including automotive, electronics, construction, and assembly.