Therefore, they can be used in chemical acid production plants and food production plants. There are different types such as ASTM F2281 UNS N02200 Ni 200 screws, hex bolts, socket head cap screws, hex nuts, washers, screws, studs and U-bolts. Fastener specification is ASTM B160. 2.4066 Nickel 200 Stud Bolts are composed of up to 99% Nickel, Copper, Iron, Manganese, Carbon, Silicon and Sulfur. ASTM F2281 nickel alloy bolts are expensive, but they are useful in sensitive applications that are susceptible to corrosion. The cost of fasteners is not as important as some chemical processing and food production applications. Nickel 200 UNS N02200 Hex Nuts are one of the most commonly used fasteners due to head geometry and high torque capability.