Threaded Rod, System of Measurement Inch, Stainless Steel, Material Grade 316, Fastener Finish Polished, Fastener Thread Direction Right Hand, Dia./Thread Size 1/2 In.-13, Length 12 ft., Fastener Thread Type UNC (Coarse), Color Silver, Temp. Range (F) -250 Degrees to 1700 Degrees , Yield Strength (PSI) 65,000, Tensile Strength 100,000 to 150,000 psi, Rockwell Hardness B95 to 32, For Use With Calbrite(TM) Stainless Steel Rod Couplings