| [332710] Machine Shops |
| [332721] Precision Turned Product Manufacturing |
| [332811] Metal Heat Treating |
| [332812] Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers |
| [332813] Electroplating, Plating, Polishing, Anodizing, and Coloring |
| [332994] Small Arms Manufacturing |
| [332995] Other Ordnance and Accessories Manufacturing |
| [332999] All Other Miscellaneous Fabricated Metal Product Manufacturing |
| [333319] Other Commercial and Service Industry Machinery Manufacturing |
| [333512] Machine Tool (Metal Cutting Types) Manufacturing |
| [333513] Machine Tool (Metal Forming Types) Manufacturing |
| [333514] Special Die and Tool, Die Set, Jig, and Fixture Manufacturing |
| [333515] Cutting Tool and Machine Tool Accessory Manufacturing |
| [333518] Other Metalworking Machinery Manufacturing |
| [334519] Other Measuring and Controlling Device Manufacturing |
| [335312] Motor and Generator Manufacturing |
| [336412] Aircraft Engine and Engine Parts Manufacturing |
| [336413] Other Aircraft Parts and Auxiliary Equipment Manufacturing |
| [336414] Guided Missile and Space Vehicle Manufacturing |
| [336415] Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing |
| [336419] Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing |
| [336992] Military Armored Vehicle, Tank, and Tank Component Manufacturing |
| [339112] Surgical and Medical Instrument Manufacturing |
| [339113] Surgical Appliance and Supplies Manufacturing |
| [339114] Dental Equipment and Supplies Manufacturing |