DIN 6923 flange nut, M20 x 1.5, sst 1000 h, Article number 69231020150GEO1000H. Property class / material: steel class 10, surface finish zinc flake, silver. Flange Nut manufactured to DIN 6923 with ISO metric (M) thread, fine pitch, fully threaded. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution.