Grainger Approved, Solutions That Make a Difference Fully Threaded Stud ASTM A193 Grade B7 fully threaded rods and studs provide high wear resistance, high temperature resistance, and high strength. Made of alloy steel that has been heat treated, they are typically used in high pressure applications, such as valves and pressure vessels in petroleum and chemical equipment. Steel fully threaded rods and studs are fasteners that provide good strength and durability for a variety of everyday fastening applications. They are made to meet certain strength requirements, indicated by an ASTM grade rating (inch fasteners) or a class rating (metric fasteners). These steel fasteners have males threads running their entire length for full engagement of nuts when assembling components. System of Measurement / Inch Threaded Rod Material / Steel Threaded Rod Material Grade / Grade B7 Threaded Rod Finish / Plain Thread Size / 1-1/4"-8 Length / 7 in Thread Direction / Right Hand Threaded Rod Thread Type / 8UN Meets/Exceeds / ASTM A193/A193M Rockwell Hardness / HRC 35 Max Temp. Range / 900 Degrees F Thread Class / 2A