An assortment of chrome-plated, button-head, socket cap screws from Hillman. Cap screws carry a recessed internal socket drive to add strength. They are commonly used on machine parts, manufacturing equipment, and other mechanical applications. Variants included in this assortment come in 5/16"-24 and 1/2"-20 fine thread sizes. Full assortments of #944386 contain fourteen (14) refills comprised of Hillman item numbers #396656, #396672, #940395 - #940404, #940406, and #940407.