Hillman Round Head Machine Screw, 1/4 x 1-1/2 In. is designed to securely fasten metal parts together, either by using nuts or by threading directly into a threaded receptacle. The length of the fastener is measured from the underside of the head to the tip of the screw, ensuring precise fit for your project needs. For optimal performance, it is to use nuts with the same finish and threading when needed, providing a reliable and durable connection. This screw is an essential component for various metalworking and assembly tasks, ing both strength and versatility. Model Number: