Supply Of Set Of Spring Washers & Flat Washers With Zinc Coated For Traction Motors As Follows. 1) 10 Mm Spring Washer As Per Is: 3063-1972, Type 'b' Duty Phospated As Per Is: 3618 Or Latest If Any. Qty/set. = 01 No. 2) 10 Mm Flat Washer Size Of Id: 10.5mm, Od: 21mm, Thickness: 2mm As Per Is: 2016. Qty/set. = 01 No. Note: One Sample Set Should Be Got Approved Before Effecting Bulk Supply.