procurement of spares for railway track maintenance 7 items , fish plates for 60 kg. rails to rdso drg. no.t-1898 (m) upto date alteration. , fish bolts and nuts (25 x 140 mm) for 60 kg. rails as per rdso drg. no. t-1899, t-23 and conforming to irs specification t-1875 , elastic rail clips with flat toe (mk111) for bg 60 kg. rail section for use with 60 kg psc sleepers to rdso drg.no.t-3701 (alt - 4) conforming to specifications irs-t-31/92 , metal liners to rdso drg.no.t-3740 (upto date alteration) conforming to 60 kg. rails & 60 kg. sleepers , grooved rubber sole plate for 60 kg. rails and 60 kg. psc sleepers to rdso drg. no.t-3711 (upto date alteration) conforming to irs specifications for 6mm thick grooved rubber sole plates , sleepers - pre-stressed, concrete, class-1 for 60 kg. rails , rails - 60 kg. of 13 metres long.