Carriage Bolt Metric Neck Type Square Basic Material Steel Material Grade Class 4.6 Fastener Finish Zinc Plated Dia/Thread Size M6-1.00 Fastener Length 80 mm Fastener Thread Direction Right Hand Fastener Thread Type Metric Coarse DIN 603 Head Dia 15.45 to 16.55mm Head Height 3.88 mm Head Type Round Square Height 4.60mm Square Width 6.48mm Tensile Strength 58 000 psi Package Quantity 100