Hillman Round Head Machine Screw, 10-24 x 1/2 In. machine screws are designed to fasten metal parts securely, either by using nuts or by screwing directly into a threaded receptacle. The length of the screw is measured from the underside of the head to the tip, ensuring accurate sizing for your fastening needs. For optimal performance and fit, it is to pair these screws with nuts that have the same finish and threading. This makes the Hillman Round Head Machine Screw a reliable choice for your metal fastening projects.