Inconel 625 Bolts And Nuts offers a very high resistance to corrosion and as such it is used in a number of sea-water applications such as washers, nuts, seals and bolts. Inconel 625 Hex Head Bolt is also used in gas turbine engine ducting, heat shields, spray bars, combustion liners and furnace hardware. Inconel 625 Fasteners used a lot in a wide range of applications, as it has very good aqueous corrosion resistance, it has excellent weldability and also due to its strength. The strength of Inconel 625 can be attributed mainly due to the solution effect that is derived from columbium and molybdenum. With Inconel 625 Bolting Materials, precipitation hardening treatments are not necessary.