supply of assembly of bearing piece washers, safety strap and pin for uncoupling gear arrangementassembly of bearing piece washers, safety strap and pin for uncoupling gear arrangement,assembly of bearing piece washers, safety strap and pin for uncoupling gear arrangem ent of boxn, bcn, bcna, boy, boby, bobyn, brn, brna wagons as per rdso drg. no.wd-00046-s- 01, alt-7, item nos.4, 5, 6 & 7, one number of each in assembled condition, one number washer i.e. it em no.5 is to be supplied in loose condition. material & specification as per drawing. [ warranty peri od: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]