Carriage Bolt, Inch, Neck Type Square, Basic Material Steel, Material Grade Grade 5, Fastener Finish Zinc Plated, Dia. /Thread Size 1/4 In. -20, Fastener Length 3 1/2 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), ASME B 18.5, Drill Size 1/4 in, Head Dia. 0.563 in to 0.594 in, Head Height 9/64 in, Head Type Round, Square Height 0.125 in to 0.156 in, Square Width 0.245 in to 0.260 in, Tensile Strength 120, 000 psi, Package Quantity 50.

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