Routing Eye Bolt System of Measurement Inch Eyebolt Type Welded Closed Eye without Shoulder Material 316 Stainless Steel Finish Plain Thread Size 5/16 In.-18 Thread Length 2 in Shank Dia 5/16 in Shank Length 3 in Shoulder Length - Eye Inside Dia 1/2 in Eye Outside Dia 1 1/16 in Overall Length 4 3/8 in Length from Ream Center - Includes Nut and (2) Washers