... to inform you that we have updated our prices of different types of Bolt,Nuts,Plain washer,Spring washer and other types ... of Chipboard & Dry wall screw,Stock hex head bolt,Threaded Rods,Hex head wood screw,Carriage bolt and ... plated-------690usd/tonCarriage bolt(din603),zinc plated-------830usd/tonHex head wood screw(din571),zinc plated--------850usd/tonStock hex.head bolt(din912 ...