An assortment of class 8 metric hex nuts from Hillman. Hex nuts are very common in general applications, especially deck and fence building. Recommended for use in conjunction with washers and bolts of similar finish to complete a secure fastener. This assortment includes parts measuring M3 thru M20 in inner diameter and ranging 0.50mm to 2.50mm in pitch size. Full assortments of #3694 contain ten (10) refills comprised of Hillman item numbers #1429 - #1432, #2468, #2522, #3695 - #3696, and #4053.