supply of procurement of bearing bolt (sub-assembly, single piece) etc.procurement of bearing bolt (sub-assembly, single piece) etc.,bearing bolt (sub-assembly, single piece) for schaku coupler of emucoaches to (i) m/s escorts drg. no. 40-586-07-03 (3) (ii) m/s wsfs drg. no. 40-586-07-03 (3), alt. 1 (iii) m/s sanroks drg. no.-2ed-181-1093.or similar rdso approved drawing and rdsos spec. no. 61-b-36 rev. 68-1 with a mendment no. 1 of october-2016 [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]