Unique Engineering is Stud Bolts Manufacturers & Suppliers. Stud Bolts is also known as bolting material or fasteners. Bolting is the term use to tighten or create the flange joint connection. Stub bolt has thread on full lengths or at both ends. It has three components if washers are not used. And if washer is used than become five components. Sometimes additional nuts are used for hydraulic tensioning with larger size stud. The length of stub bolts should be enough to cover the entire nut plus 1.5 to 3 threads exposed.