Profile: Mettler Steels Pvt.Ltd specializes in offering various types of fasteners. Our A193 Grade B7 studs are used in high temperature, high pressure flange bolting and other bolting applications where high strength is required. Double end studs are used for flange bolting or other applications where torquing from both ends is necessary or desirable. Fully Threaded Studs are used in the same type of applications as a double end stud. It is preferred where maximum adjustment is needed.