1/4-20X36 THREADED ROD ZC 25 PER BUNDLE IFI Ref Standards IFI-136 / IFI-140, UNC FULL THREAD RODS DIA 1/4” TPI 20, LENGTH 36 INCHES, LOW or MEDIUM CARBON STEEL, CORE HARDNESS B69-B100, PROOF LOAD: N/A, YIELD STRENGTH: N/A, TENSILE STRENGTH: 60,000 PSI Min.