System Of Measurement:Inch; Item:Plow Bolt; Plow Bolt Type:Square Neck Plow Bolt; Head Type:#3 Dome; Basic Material:Alloy Steel; Material Grade:Grade 8; Fastener Finish:Plain; Dia./Thread Size:5/8"-11; Fastener Length:5 In; Fastener Thread Direction:Right Hand; Fastener Thread Type:Unc (Coarse); Fastener Industry Standards:Sae J-429; Head Style:Countersunk; Head Dia.:1.044 In; Head Height:0.516 In; Head Angle (Deg.):80; Square Width:0.64 In; Tensile Strength (Psi):Sae J 429;