A Hillman assortment of class 8.8 metric hex cap screws with thread sizes M6-1.00, M8-1.25, and M10-1.50. Hex cap screws, or hex bolts, are perfect for most applications in which a stronger, sturdier bolt is desired. A common feature on hex cap screws is a washer surface directly under the head which creates a better seal. The assortment features hex cap screws in variants featuring M6-1.00, M8-1.25, and M10-1.50 coarse screw thread in lengths ranging 55mm thru 120mm. Full assortments of #3596 contain nine (9) refills comprised of Hillman item numbers #3597 - #3605.