Stud Bolts are externally threaded fasteners without a head, used with 2 nuts on either side, substituting a usual "bolt & nut" assembly. Stud bolts are prominently used in flange connections. Depending upon their design and threading patterns, there are different types of stud bolts as below.
Considering the shape of a stud, these are categorized into three basic types: Fully Threaded Stud. Tap-End Stud. Double-End Stud.