Helical Spring Washers Type B M10 , Material Spring Steel, Zinc Plated (Passivated) Conf Orming To Is: 3063. (Note: Material To Be Procured From Clw Approved Vendors Only). [ Warranty Per Iod: 30 Months After The Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitt Ed: Max 8 Lacs ] ]