An assortment of stainless steel metric socket-head 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 M4-0.70 and M5-0.80 coarse thread sizes. Full assortments of #45328 contain fifteen (15) refills comprised of Hillman item numbers #4398 - #4404 and #45329 - #45336.