Nascent Pipe & Tubes is one of the well-established dealer and stockiest of quality Nickel Alloy 201 (Bolts / Nuts), where annealing should be performed in a reducing atmosphere to retain bright finishes. These Nickel 201 Hex Head Bolts has been found that 0.25 % moisture in hydrogen chloride did not affect corrosion rate in both wet and dry gas at 400 Degree F (205 Degree C)