61555111 Machine Screw is an ideal fastener for metal to metal applications with pre-drilled holes Hex socket countersunk head helps distribute load to a wider area Zinc-plated steel for improved corrosion resistance DIN 7991 compliant Dimensions: M6 diameter; Length 30 mm More balanced load distribution with the countersunk head and internal hex socket Suitable for indoor/outdoor applications Ideal for use on metal to metal fastening Rust-free and corrosion-resistant zinc-plated steel