Carriage Bolt Metric Neck Type Square Basic Material Steel Material Grade Class 4.6 Fastener Finish Zinc Plated Dia/Thread Size M12-1.75 Fastener Length 170 mm Fastener Thread Direction Right Hand Fastener Thread Type Metric Coarse DIN 603 Head Dia 29.35 to 30.65mm Head Height 6.95 mm Head Type Round Square Height 8.75mm Square Width 12.70mm Tensile Strength 58 000 psi Package Quantity 10