SUPERLIFT U-Bolts are manufactured from low alloy, high strength steel. U-Bolts up to 13" long have typical yield strength of 90,000 PSI and a tensile strength of 120,000 PSI.
The 14" and longer U-bolts typically have yield strength of 115,000 PSI and 133,000 PSI tensile strength. Thread type is National Fine Class 2A.
U-bolts come in either anti-corrosion zinc or black e-coat finish. SUPERLIFT U-Bolts are sold in packs of four and come paired with (8) specific long nuts and (8) phosphate coated, heat treated, extra thick washers.