M8 x 40mm Socket Cap Head Screws (DIN 912) - 7075 Aluminium Anodised Black Metric Socket Cap Head Screws are a widely used machine screw, which feature an internal socket drive, and are fastened with a Hexagonal\/Allen key. Due to this, they are very versatile and easily accessible as the internal drive allows for a smaller head diameter than seen on other machine screws. These Socket Cap Head Screws have been precision manufactured in house from high quality 7075 Aluminium Bar using state of the art CNC machines. Due to this, unless the item is deemed faulty, this item is non-returnable and non-refundable. For larger quantities or items not listed, please email and one of our team will provide you with a quotation. M8 x 40mm Socket Cap Head Screws (DIN 912) - Aluminium 7075 Anodised Black