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. Thread Size / 1"-8 Thread Direction / Right Hand Meets/Exceeds / ASTM A193/A193M Rockwell Hardness / HRC 35 Max Temp. Range / 900 Degrees F