An assortment of class 10.9 metric hex cap screws from The Hillman Group. 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. Included variants feature a coarse M18-2.50 thread size and range from 40mm to 100mm in length. Full assortments of #36276 contain seven (7) refills comprised of Hillman item numbers #36277 - #36283.