Fully Threaded Rod Material Grade/Class Grade A Material Steel Finish Zinc Plated Thread Size 5/16 In.-18 Overall Length 12 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