Tender For supply of piston assembly for bolster friction device for wap4 loc, item consisting of 1)piston as per rdso drg.no. 29.04.06 alt-6, or latest , item ref.1 /a1 as per modification sheet no mp.mod.vl.04-11-09 (rev. 00)dated 28.04.2009, 2) pin.3) sleeve 14.8 x 19 x 38mm 4) end plate. 5) dowel pin 6x 61mm 6) screw hes.head m 8 x 10 mm item 2,3,4,5 and 6 shall be as per southern railway els/ed drg.no. sr.dee/rs/ed/mech-96, alt-1. [ warranty period: 30 months after the date of delivery ]