supply of side frame friction liner to rdso drg no. sk.69594 , item - 7, alt:39 and conforming to rdso spec. no. wd-21-casnub-22nlb-bogie-93 ( rev-3) of may 2026 , side frame friction liner to rdso drg no. sk.69594 , item - 7, alt:39 and conf orming to rdso spec. no. wd-21-casnub-22nlb-bogie-93 ( rev-3) of may 2026 to rdso drg n o :sk.69594 , item - 7, alt : 39. material: is 3885 (fabrication item) note: manufacturers initial, mo nth & year of manufacturing shall be marked by metal laser engraving/dot peen marking in 6 mm size & 0.1 mm depth minimum. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permit ed: max 8 lacs ] ]