supply of procurement of spares for track machines , shaft as per plasser part no. wn105-50f7.232.6-1, make- plasser or its equivalent ] , spacer ring as per plasser part no. w37.2040, rdso drawing no. rdso/tm/02/15 and spe cification no. tm/hm/6/357, make- plasser or its equivalent ] , wear plate as per plasser part no. rm08b.27.0203, make- plasser or its equivalent ] , wearing plate as per plasser part no. rm08b.27.0205, make- plasser or its equivalent. ] , cutter bar as per plasser part no. rm08b.25.2150.01 with 1) steel grade 2 to is:4896-19 76, 2)bh hardness :400-420, 3)tensile strength - 900n/mm square (min) , 4) elongation % -6.0 (min), mak e- plasser or its equivalent ] , wear plate as per plasser part no. rm08.121.0153, make- plasser or its equivalent ] , metal wearing plate as per plasser part no: 354.033.1321,make : plasser or its equivalen t ] , conveyor belt as per plasser part no :960/ep630/2-4+2-15000mm, make : plasser or its e quivalent ]