... plates and joint bars.4, Rail brace, welded shoulders and rail anchors.5, Standard fasteners.6, Nuts, flat washers and spring washers, plastic pads, nylon ... or wooden boxbolts and nuts 1.material:40Cr, 35CrMo 2.surface:zinc plated,phosphated 3.size:M8-M48 4.grade:8.8 ... ,10.9,12.Bolts and nuts:Mechanical Properties1, Material: 40 Cr ...