139 and packing data, a standard quantitative unit of measurement, and other related data that the Secretary determines to be desirable. (c) I n standardizing supplies the Secretary shall, to the highest degree practicable— (1) standardize items used throughout the Department of Defense by developing and using single specifications, eliminating overlapping and duplicate specifications, and reducing the number of sizes and kinds of items that are generally similar; (2) standardize the methods of packing, packaging, and preserving standardized items; and (3) make efficient use of the services and facilities for inspecting, testing, and accepting those items. §2452. Duties of Secretary of Defense The Secretary of Defense shall— (1) develop and maintain the supply catalog, and the standardization program, described in section 2451 of this title; (2) direct and coordinate progressive use of the supply catalog in all supply functions within the Department of Defense from the determination of requirements through linal disposal; (3) direct, review, and approve— (A) the naming, description, and pattern of description of all items; (B) the screening, consolidation, classification, and numbering of descriptions of all items; and (C) the publication and distribution of the supply catalog; (4) maintain liaison with industry advisory groups to coordinate the development of the supply catalog and the standardization program with the best practices of industry and to obtain the fullest practicable cooperation and participation of industry in developing the supply catalog and the standardization program; (5) establish, publish, review, and revise, within the Department of Defense, military specifications, standards, and lists of qualified products, and resolve differences between the military departments, bureaus, and services with respect to them; (6) assign responsibility for parts of the cataloging and the standardization programs to the military departments, bureaus, and services within the Department of Defense, when practical and consistent with their capacity and interest in those supplies; (7) establish time schedules for assignments made under clause (6); and ^ (8) make final decisions in all matters concerned with the cataloging and standardization programs. §2453. Supply catalog: distribution and use The Secretary of Defense shall distribute the parts of the supply catalog described in section 2451 of this title as they are completed. Existing catalogs shall be replaced according to schedules established by the Secretary. After replacement no other supply catalog may be used within the Department of Defense with respect to the kinds of items covered by that part. All property reports and records shall use the nomenclature, item numbers, and descriptive data of the supply catalog.