M10 Serrated Flange Hex Nuts - 10mm Steel (Pack of 20) Evelyne

M10 (10mm) Steel serrated flange nuts. 20 Pack of 10mm Nuts Dimensions – Nut outer diameter - 15mm, Internal diameter 10mm, outer flange diameter 20mm Serrated Flange Nuts A flange nut is a nut that has a flange at one end that is wider than the hex of the nut. The flange acts as an integrated fixed washer that distributes the pressure of the nut over the part being secured, reducing the chance of damage, and making it less likely to loosen thanks to the serrated face. The flange is serrated to provide a locking action. The serrations are angled such that they keep the nut from rotating in the direction that would loosen the nut. Because of the serrations they cannot be used with a washer or on surfaces that cannot be scratched. The serrations help in avoiding vibration of nut and increase the holding power of nut.