Round-Head Combo Machine Screw with Nut (5/16-18 x 2-1/2 in.)

An assortment of round-head, combination-drive, zinc-plated machine screw variants from The Hillman Group. All screws included in this assortment also come with a hex nut. Machine screws and nuts are used in conjunction with one another in order to fasten metal parts together securely. To ensure proper fit and quality of life, make sure to use machine screws with nuts of similar thread size and finish. Variants included in this assortment feature a coarse 5/16"-18 thread size and run 3/4" to 3" in length. Full assortment contains seven (7) refills comprised of Hillman item numbers #1748 - #1754.