Large hexagon head bolt with nut and washer 1.Certificate:ISO9001:2008. 2. ... . Main products:rail clip,screw spike,bolts,nuts,rail pad,washer,fish plate and insulator.Steel structure Hexagon bolt with nut and ... #HRC22-HRB95washer 45#,35#12-30(mm)HRC35-45 Large hexagon head bolt with nut and washer