The M4X20/D965B is a type of M4 screw from Kraftberg. These screws are specifically designed with extended drive heads, which allows for better grip when using an Allen key to tighten or loosen the fastener. In addition, these screws have 6-lobe drive heads, which provides extra driving strength and reduces the risk of screw stripping. The M4X20/D965B screws have a length of 20 mm, a diameter of 4 mm, and are coated with a durable black oxide finish. These fasteners are suitable for a variety of applications, including woodworking, furniture assembly, and mounting of components in cars and other machinery. The M4 screws from Kraftberg are Duranitic-treated, making them more resistant to corrosion.