supply of supply of hanger for bogie pull rod roller and roller for bogie pull rod box. , hanger for bogie pull rod roller to rdso drg. no. wd-88050-s-2, alt.no.-14, item no.-11, 50% quan tity of 404 mm height & 50% quantity of 389 mm height and material conforming to is: 2062- 2011, with amendm ent no.1 of nov 2012, grade: e 250 a. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 la cs ] ] , roller for bogie pull rod box, bcx wagons. w/bg.6200. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 la cs ] ]