DLA Weapons Support has issued a Sources Sought Notice for market research to identify companies capable of manufacturing or legitimately obtaining NSN 2840-01-147-0478, a gas temperature exhaust thermocouple. The item is currently manufactured by Aero Precision Industries LLC under part number 635E874P03 and Ametek Inc. under part number 8TC53AAA3, with Weapon System Designator Code 56F. This notice is for informational purposes only, is not a solicitation or request for offers, and creates no government commitment to award; no funds are available to pay for preparing responses. Because the item is source controlled, DLA cannot add new sources, and only the manufacturing source specified on the source control drawing can approve new sources. Interested parties seeking approved-source status may email Gladys Brown at gladys.brown@dla.mil.