Tenders for Supply of Return Spring For Aux. Switch Of Ep Contactor As Per Drg. No. B/Trs/Htc/4/174. Material Specifica Tion: Phosphor Bronze Strip Extra Hard To Is: 1385 Of 1968, Grade Pcus N6. Material To Be Supplied Along With The Test Report, Else Liable For Rejection. Note: One Sample Should Be Got Approved Before Effecting Bulk Supply. Warr Anty Period: 30 Months After The Date Of Delivery