Fully Threaded Rod Material Grade/Class Grade B7 Material Steel Finish Black Oxide Thread Size 1/2 In.-20 Overall Length 3 ft Tensile Strength 125 000 psi System of Measurement Inch Thread Direction Right Hand Dimensional Standards ASME B18.31.3 Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F Minimum Yield Strength 105 000 psi Rockwell Hardness C35 Max