A Hillman assortment of metric hex nuts, washers, and class 8.8 metric hex cap screws with thread size M7-1.00. 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. Hex nuts screw onto the threaded end of a hex cap screw in order to complete the fastener. Hex cap screws and nuts included in this assortment feature M7-1.00 coarse thread with screws coming in variants ranging 10mm thru 45mm in length. Full assortments of #3399 contain eleven (11) refills comprised of Hillman item numbers #3400 - #3410.