SBAC TS 148 Issue 4 (2004) Manufacturing Specification For Studs, Bolts And Screws In Dtd 5638, En 2952, En 2961 And En 3219 Material 1275 Mpa (185,000 Lbf/in[2]) Tensile At Room Temperature (for Which Forging Is Optional And Qualification Not A Requirement) Covers the requirements for studs, bolts and screws in DTD 5638, EN 2952, EN 2961 and EN 3219 material (for which forging is optional and qualification not a requirement). The parts will develop a min