An assortment of stainless steel button-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 range from #6-32 thru #10-32 in coarse & fine thread sizes. Full assortments of #43986 contain sixteen (16) refills comprised of Hillman item numbers #43987 - #44002.