Machinery Eye Bolt System of Measurement Metric Eyebolt Type With Shoulder Material Steel Finish Plain Thread Size M18-2.50 Thread Length 51.3 mm Shank Dia 18 mm Shank Length 51.5 mm Shoulder Dia 28.40 to 31.80mm Shoulder Length 7.15 mm Eye Inside Dia 38 mm Eye Outside Dia 71.5 mm Overall Length 128.5 mm Working Load Limit 2 140 lb