| PSC | Description
|
| K010 | Modification of Weapons |
| K011 | Modification of Nuclear Ordnance |
| K012 | Modification of Fire Control Equipment |
| K013 | Modification of Ammunition & Explosives |
| K014 | Modification of Guided Missiles |
| K015 | Modification of Aircraft |
| K016 | Modification of Aircraft components |
| K017 | Modification of Aircraft Ground Equipment |
| K018 | Modification of Space Vehicles |
| K019 | Modification of Ships, Small Craft, Pontoons and Floating Docks |
| K020 | Modification of Ship and Marine Equipment |
| K022 | Modification of Railway Equipment |
| K023 | Modification of Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles |
| K024 | Modification of Tractors |
| K025 | Modification of Vehicular Equipment Components |
| K026 | Modification of Tires and Tubes |
| K028 | Modification of Engines, Turbines and Components |
| K029 | Modification of Engine Accessories |
| K030 | Modification of Mechnical Power Transmission Equipment |
| K031 | Modification of Bearings |
| K032 | Modification of Woodworking Machinery and Equipment |
| K034 | Modification of Metalworking Machinery |
| K035 | Modification of Service and Trade Equipment |
| K036 | Modification of Special Industry Machinery |
| K037 | Modification of Agricultural Machinery and Equipment |
| K038 | Modification of Construction, Mining, Excavating and Highway Maintenance Equipment |
| K039 | Modification of Materials Handling Equipment |
| K040 | Modification of Rope, Cable, Chain and Fittings |
| K041 | Modification of Refrigeration, Air Conditioning Equipment |
| K042 | Modification of Fire Fighting, Rescue and Safety Equipment |
| K043 | Modification of Pumps & Compressors |
| K044 | Modification of Furnace, Steam Plant, Drying Equipment and Nuclear Reactors |
| K045 | Modification of Plumbing, Heating and Waste Disposal Equipment |
| K046 | Modification of Water Purification and Sewage Treatment Equipment |
| K047 | Modification of Pipe, Tybing, Hose and Fittings |
| K048 | Modification of Valves |
| K049 | Modification of Maintenance And Repair Shop Equipment |
| K051 | Modification of Hand Tools |
| K052 | Modification of Meausuring Tools |
| K053 | Modification of Hardware & Abrasive |
| K054 | Modification of Prefabricated Structures and Scaffolding |
| K055 | Modification of Lumber, Millwork, Plywood and Veneer |
| K056 | Modification of Construction and Building Materials |
| K058 | Modification of Communication, Detection and Coherent Radiation Equipment |
| K059 | Modification of Electrical and Electronic Equipment |
| K060 | Modification of Fiber Optics Materials, Components, Assemblies and Accessories mater |
| K061 | Modification of Power Distribute Equipment |
| K062 | Modification of Lighting Fixtures |
| K063 | Modification of Alarm, Signal and Security Detection Systems |
| K065 | Modification of Medical, Dental and Veterinary |
| K066 | Modification of Instruments and Laboratory Equipment |
| K067 | Modification of Photographic Equipment |
| K068 | Modification of Chemicals and Chemical Products |
| K069 | Modification of Training Aids and Devices |
| K070 | Modification of Automatic Data Processing Equipment, Software, Supplies and Support Equipment |
| K071 | Modification of Furniture |
| K072 | Modification of Household and Commercial Furnish |
| K073 | Modification of Food Preparation and Serving Equipment |
| K074 | Modification of Office Machines |
| K075 | Modification of Offices Supplies and Devices |
| K076 | Modification of Books, Maps and Other Publications |
| K077 | Modification of Musical Instruments, Phonographics and Home-Type Radios |
| K078 | Modification of Recreational Equipment |
| K079 | Modification of Cleaning Equipment |
| K080 | Modification of Brushes, Paints, Sealers and Adhesives |
| K081 | Modification of Containers, Packaging, and Packing Supplies |
| K083 | Modification of Textiles, Leather, Furs, Tents and Flags |
| K084 | Modification of Clothing, Individual Equipment |
| K085 | Modification of Toiletries |
| K087 | Modification of Agricultural Supply |
| K088 | Modification of Live Animals |
| K089 | Modification of Subsistence |
| K091 | Modification of Fuels, Lubricants, Oils and Waxes |
| K093 | Modification of Nonmetallic Fabricated Materials |
| K094 | Modification of Nonmetallic Crude Materials |
| K095 | Modification of Metal Bars, Sheets and Shapes |
| K096 | Modification of Ores, Minerals, and their Primary Products |
| K099 | Modification of Miscellaneous Equipment |