A flange nut DIN 6923 is a type of nut that has a flange or collar around the base. This flange provides a larger bearing surface and can help to distribute the load more evenly, preventing the nut from loosening or backing off. DIN 6923 is a German standard that specifies the dimensions, tolerances, and material requirements for these nuts. Flange nuts DIN 6923 are commonly used in various applications, including construction, machinery, and automotive components, where a secure and reliable connection is needed.