Hillman Round Head Machine Screw, 6-32 x 3/4 In. is designed to securely fasten metal parts together, either by using nuts or by screwing directly into a threaded receptacle. The length of this machine screw is measured from the underside of the head to the tip, ensuring precise fit for your fastening needs. For optimal performance, it is to pair this screw with nuts that have the same finish and threading. Model Number: