Routing Eye Bolt System of Measurement Inch Eyebolt Type Turned Wire Material Steel Finish Zinc Plated Thread Size 5/16 In.-18 Thread Length 2 1/2 in Shank Dia 5/16 in Shank Length 4 in Eye Inside Dia 5/8 in Eye Outside Dia 1 11/64 in Overall Length 5 1/8 in Includes One Hex Nut Package Quantity 10