The 7-21000-9 is an active socket head cap screw designed for fastening applications. This component is compliant with the substance restrictions of the EU RoHS Directive 2011/65/EU and the End of Life Vehicles Directive 2000/53/EC (ELV). As a socket head cap screw, it is typically used in mechanical assemblies that require a strong, reliable joint and is installed using a hex key.