Discover the perfect solution for your fastening needs with our Button Head Socket Cap Screw. This durable steel screw, featuring a sleek Thermal Black Oxide finish, is designed to provide reliable and long-lasting performance. With a thread size of M4 x 0.7 and a length of 20mm, it is ideal for a variety of applications. The 10.9 material grade ensures strength and durability, while the Hex Socket drive type offers easy installation. Rest assured, this screw is not only high-quality but also environmentally friendly, boasting RoHS compliance. Upgrade your toolbox with this essential metric fastener today.