Carriage Bolt, Metric, Neck Type Square, Basic Material Steel, Material Grade Class 4.6, Fastener Finish Zinc Plated, Dia./Thread Size M10-1.50, Fastener Length 55 mm, Fastener Thread Direction Right Hand, Fastener Thread Type Metric Coarse, DIN 603, Head Dia. 23.35 to 24.65mm, Head Height 5.38 mm, Head Type Round, Square Height 6.60mm, Square Width 10.58mm, Tensile Strength 58,000 psi, Package Quantity 50