Carriage Bolt, Inch, Neck Type Square, Basic Material Stainless Steel, Material Grade 18-8, Fastener Finish Zinc Plated, Dia./Thread Size 1/4 In.-20, Fastener Length 1 7/8 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), ANSI/ASME B18.5, RoHS Compliant, Head Height 9/64 in, For Use With Doors, Package Quantity 12