Grade 5 Ti6Al4V Titanium Hex Flange Nut M8 in Natural Rainbow Gold and Green ColorsDIN6923 Titanium Flange nut Titanium Flanged Nut, the flange serves to distribute the pressure of the Nut over the part being secured, reducing the chance of damage to the part and making it less likely to loosen as a result of an uneven fastening surface. Our Nuts are made from Aerospace quality Grade 5, 6AL-4V Titanium to produce a Nut which provides strength and corrosion resistance along with amazing weight saving benefits of approx. 40% over steel.