Heavy Duty Hoist Ring Threaded Stud Specifications: 11/4" inches diameter, Working Load Limit: 10000 pounds Forged and machined high strength alloy steel, Black Oxide Finish for corrosion resistance Minimum Design Factor = 5:1, Magnetic Particle Inspected Per ASTM E1444, Hoist Rings retain the same rated load from 0 to 90 degrees from the bolt axis Meets Military Specification No. MIL-STD 209, Meets ANSI/ASME B30.26 Proudly Made in the USA, ABD Part Number: 36960