An assortment of class 8.8 metric hex cap screws from The Hillman Group. Hex cap screws can be used when looking for outdoor applications or simply a stronger bolt. Variants included in this assortment range from M8-1.00 to M10-1.25 in fine thread size and from 16mm to 40mm in length. Full assortments of #1568 contain sixteen (16) refills comprised of Hillman item numbers #1569 - #1584.