Northern Railway invites online e-tenders (Notice No. 21/2026-2027) for the supply of 9 railway components, including check rails, bogie arrangements, complete assemblies of TWS, roller bearings, FRP louvre shutters, collars, and sealed window glass. Individual item quantities range up to 8,703 numbers with closing deadlines scheduled between July 13 and August 26, 2026. Electronic bids must be submitted online through the official portal ireps.gov.in.