DLA is seeking proposals for a B-52 aircraft rib stiffener (NSN 1560-016481373) under an indefinite-quantity contract with a five-year ordering period, no option to extend, and an estimated annual quantity of 10 units. The procurement is a 100% small business set-aside (NAICS 336413), with a required delivery schedule of 365 days production. Export control and configuration control apply; it is a critical application item but not a critical safety item, and first article/production lot testing are not required. The solicitation will be available via DIBBS with an issue date on or about October 23, 2026, and offerors must complete the solicitation to be considered; evaluation will use price, past performance (PPIRS/SPRS), and other factors. FOB destination with inspection/acceptance at origin, and specifications/plans/drawings may be furnished through C-Folders if applicable, with sources listed in the item description.