Fully Threaded Rod, Material Grade/Class Grade A, Material Steel, Finish Zinc Plated, Thread Size 5/16 In.-18, Overall Length 6 ft, Tensile Strength 60,000 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, Rockwell Hardness Not Rated