Stainless Steel Oblong Lifting Eye Nut Ring 1/4 Tap UNC 520 LBS Capacity Grade 316 SS Industrial lifting eye nut, precision cast grade 316 stainless steel for superior rust resistance 1/4 in. thread size, 3/8 thread depth, 1/4 shank diameter; standard UNC thread, electronic polish Inside eye dimensions 3/4 x 1 in., height overall 1-11/16, weight 1.2 oz Suitable for marine, boating and industrial applications; standard oblong-eye style Working load limit 520 lbs. Numerous other styles/sizes (including metric) also available