Hex Locknut Serrated Flange Steel Finish Zinc Plated Grade 2 Thread Size 7/16-14 Thread Type UNC Thread Direction Right Hand Width 11/16 In Height 25/64 In Flange Dia 15/16 In Flange Thickness 0.040 In Rockwell Hardness Rc 45 min Surface General Purpose Meets/Exceeds IFI-145 Package Quantity 50