Industrial lifting eye nut, precision cast grade 316 stainless steel for superior rust resistance * 1/4 in. UNC thread size, 3/8 thread depth, 3/16 shank diameter; electronic polished * 9/16 eye inside diameter, 1 in. eye outside diameter; height overall 1-1/8, weight 0.3 oz * Tall-collar design allows greater thread depth for increased lifting capacity * Working load limit 400 lbs. Numerous other styles/sizes (including metric) also available