plow bolt and nut 1.material: 35CrMo, 40Cr 2.HRC ... Treament, Phosphating 4.good quality, best price, fast deliver plow bolt and nut: 1.Details:1. material: 40Cr, 35CrMo2) ... ) surface is treated with bluing, screw thread has two type description, one is the metric system:M12-M24-6g, ... sizes of bearings and bushings, bolts and buts, track chain, track shoes, and other excavator parts.history: more than ...