supply of high tensile aar h type tight lock coupler with transition screwhigh tensile aar h type tight lock coupler with transition screw,high tensile aar h type tight lock coupler with transition screw coupling and its associated compon ents for fitment on bg passenger coaches of indian railways to rdso specification no. rdso/2009/cg-22, rev.1 and also confirming to rdso specification no. rdso/2011/cg-03, rev.3. one coupler set shall consist of the follow ing. 1. tight lock coupler head with transition screw coupling and its associated components -01 no. 2. balanced d raft gear with pivot pin-01 no. 3. supporting device for coupler head with fasteners-01 no. 4. manual coupling devi ce with fasteners-01 no. 5. rear carrier plate for draft gear with fasteners-01 no. 6. front carrier plate for draft ge ar with fasteners-01 no. [ warranty period: 30 months after the date of delivery ] ]