Stainless Steel Tall-Collar Lifting Eye Nut Ring 3/8 UNC 1000 LBS Capacity Grade 316 SS Industrial lifting eye nut, precision cast grade 316 stainless steel for superior rust resistance 3/8 in. UNC thread size, 5/8 thread depth, 5/16 shank diameter; electronic polished 1 in. eye inside diameter, 1-5/8 in. eye outside diameter; height overall 1-7/8, weight 2.0 oz Tall-collar design allows greater thread depth for increased lifting capacity Working load limit 1000 lbs. Numerous other styles/sizes (including metric) also available