primary spring for generator car inner for fiat bogie of lhb coaches f iat drg no 1277143 ver 01 as per rdso specification no rdso 2017 cg 01 rev 01 as per d rg no fiat drg no 1277143 ver 01 specn as per rdso specification no rdso 2017 cg 01 r ev 01 warranty period 30 months after the date of delivery quantity tolerance 5 age item category normal total po value variation permitted max 8 lacs