supply of spares for mu coupler required for amrit bharat coaches , supply of 22 pin uic circular type connector plug assembly complete without cables for mu coupler including contact pins etc., conforming to rdso modification sheet no. rdso/pe/ms/ac/0 080-2019 (rev-2) or latest for amrit bharat coaches. note: (i) tenderer shall submit prototype approv al letter/first article inspection (fai) clearance letter issued by rdso if approved. (ii) prototype approv al/ first article inspection (fai) clearance shall be obtained from rdso if not approved. [ warranty p eriod: 30 months after the date of delivery ] ] , supply of 22 pin circular uic circular type connector socket assembly complete without cables for mu coupler including contact pins etc., conforming to rdso modification sheet no.rdso/pe /ms/ac/0080-2019 (rev-2) or latest for amrit bharat coaches. note: (i) tenderer shall submit prototyp e approval letter/first article inspection (fai) clearance letter issued by rdso if approved. ii) prototyp e approval/ first article inspection (fai) clearance shall be obtained from rdso if not approved. [ war ranty period: 30 months after the date of delivery ] ]