The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Oklahoma City, is conducting market research for the procurement of Pressure Transmitter Units, specifically targeting multiple National Stock Numbers (NSNs) including 6685-01-714-1895, 6685-01-714-3830, and 6685-01-714-2855. The objective is to identify potential sources capable of manufacturing these units, which are critical for measuring and controlling pressure, temperature, and humidity in various defense applications. Interested businesses, including small enterprises, are invited to submit a Source Approval Request (SAR) package detailing their capabilities, including labor, materials, and equipment necessary for production, inspection, and shipping. Responses are due by a specified date, and inquiries should be directed to the primary contact at 422.scms.afmc.rfi@us.af.mil.