Machinery Eye Bolt System of Measurement Metric Eyebolt Type Lift with Shoulder Material Steel Finish Zinc Plated Thread Size M20-2.50 Thread Length 30 mm Shank Dia 20 mm Shank Length 30 mm Shoulder Dia 40.0mm Shoulder Length 14 mm Eye Inside Dia 40 mm Eye Outside Dia 72.0 mm Overall Length 102 mm Working Load Limit 1 197 lb