DIN 6923 flange nut, M8, en 10204 3.1 certificate, sst 1000 h, Article number 6923808DELC. Property class / material: steel class 8, surface finish ruspert silver. Flange Nut manufactured to DIN 6923 with ISO metric (M) thread, coarse 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.