Metric Serrated Flange Nuts Assortment (M3-0.50 thru M20-2.50)Hillman Item #33709
An assortment of metric serrated flange nut variants from The Hillman Group. Flange nuts are hex nuts with a scored, or serrated, built-in washer to resist vibration. The flange distributes the pressure of the nut, which reduces the chance of damage and makes it less likely to loosen. Variants included in this assortment range from M3-0.50 to M20-2.50 in coarse thread size. Full assortment contains ten (10) refills comprised of Hillman item numbers #33710 - #33720.