supply of design manufacture and supply of high tensile aar h type tight lock centre buffer coupler head with transition screw coupling and its associated components for fitment on broad gauge passenger coachesdesign manufacture and supply of high tensile aar h type tight lock centre buffer coupler head with transition screw coupling and its associated components for fitment on broad gauge passenger coaches,design manufacture and supply of high tensile aar h type tight lock centre buffer cou pler head with transition screw coupling and its associated components for fitment on broad gau ge passenger coaches of indian railways as per rdso.specn.no. rdso/2009/cg-22, rev -01 one coupler set shall consists of the following 1.tight lock coupler head with transition screw coupling and i ts associated components 1 no rdso approved firm drgs. 2.balanced draft gear with pivot pin 1 no rdso approved firm drgs. 3.supporting device for coupler head with m20 fasteners 1 no rdso appro ved firm drgs. 4.manual uncoupling device with m12 fasteners 1 no rdso approved firm drgs. 5.rear carrier plate for draft gear with m16 fasteners 1 no rdso approved firm drgs. 6.front carrier plat e for draft gear with m16 fasteners 1 no rdso approved firm drgs. special condition : 1. maintenance manual in soft copy and hard copy shall be supplied with item. 2.necessary test certificates as per rdso.specn.no. rdso/2009/cg-22 (rev -01) shall be supplied with item. 3. amd-01 of rev.03 or latest revi sion of specification rdso/2011/cg-03 referred in rdso/2009/cg-22, rev -01 or latest shall be followed. 4. tenderer to submit rdso approved drawings at the time of quoting the tender. 5. packing conditi on: items are to be packed in two different boxes as given below. i. list of items to be in box-1 1. bal anced draft gear with wedge block assembly & wedge block. 2. rear carrier plate 3. fornt carrier plate 4. fasteners for front and rear carrier plates. ii. list of items to be in box-2 1. coupler head a nd