supply of knuckle thrower , knuckle thrower (for high tensile tight lock centre buffer coupler with aar h type head and balanced draft gear) to escorts drawing no. sk-1560 and conforming to rds o spec. no. rdso/2011/cg-03 (rev -1), amendment no.1, 2016. [ warranty period: 48 months after th e date of delivery ] ] , wear plate for aar h type cbc coupler as per escorts part no. sk 711, to rdso sp ec no. rdso/2011/cg-03 (rev-3) [ warranty period: 48 months after the date of delivery ] ] , wear plate as per escorts drg. no. sk 723 conforming to rdso specification no. rdso/201 1/cg-03 (rev-1). make: sona blw precision forgings ltd. [ warranty period: 48 months after the da te of delivery ] ] , rotary lock lifter for aar-h type tight lock coupler head assembly (escorts make)for high tensile tight lock center buffer coupler with aar h type head and balanceddraft gear to rdso specificati on no. rdso/2011/cg-03 (rev-1) [ warranty period: 48 months after the date of delivery ] ] , support pin for main pin for knuckle as per sk: 576 support for cbc of lhb coac hes to rdso spec no rdso/2011/cg-03 rev 01 [ warranty period: 48 months after the date of deliver y ] ] , lock for high tensile aar h type tight lock cbc with aar h type head to rdso specificatio n no- rdso/2011/cg-03 (rev.01) and escort drawing no- sk-612. [ warranty period: 48 months after t he date of delivery ] ]