| Goff Davis Operating Co. LLC | Euless | TX | Subcontractor |
| Goodwin-bradley Pattern Co. Inc. | Providence | RI | Subcontractor |
| Graham Research Inc. | Minneapolis | MN | Subcontractor |
| Grain Belt Supply Company, Inc. | Salina | KS | Subcontractor |
| Graphite Electrodes Ltd. | Bay City | MI | Subcontractor |
| Green Specialty Services, L.L.C. | Joshua | TX | $0 |
| Gretna Machine Shop, Inc. | Houston | TX | Subcontractor |
| Group E Holdings Inc. | Palm Bay | FL | Subcontractor |
| Grover Gundrilling, LLC | Oxford | ME | Subcontractor |
| Gsi International Inc. | Chandler | AZ | $0 |
| GTG, Inc. | Middleton | MA | Subcontractor |
| G & T Manufacturing Co. | Mentor | OH | $0 |
| G & Z Industries Inc. | Wheeling | IL | Subcontractor |
| H3 Company Holdings, LLC | Schaumburg | IL | Subcontractor |
| H3 Manufacturing Group LLC | Schaumburg | IL | Subcontractor |
| Haberman Machine, Inc. | Oakdale | MN | Subcontractor |
| H A Burrow Pattern Works, Inc. | Joliet | MT | Subcontractor |
| Hagbros Precision LLC | Round Rock | TX | Subcontractor |
| Halcyon Manufacturing Inc. | San Jose | CA | Subcontractor |
| Halter Machine Shop Inc. | Lawrenceville | IL | $0 |
| Hamblen Machine Inc. | Bloomington | IN | $0 |
| Hansen Engineering Co. | Harbor City | CA | Subcontractor |
| Hansen's Welding, Inc. | Gardena | CA | Subcontractor |
| Harbor Island Machine Works, Inc. | Seattle | WA | $0 |
| Hardric Laboratories, Inc. | Hudson | NH | Subcontractor |
| Hardy Engineering & Manufacturing, Inc. | Auburn | WA | Subcontractor |
| Hardy Machine, LLC | Hatfield | PA | Subcontractor |
| Harford Machine Shop, Inc. | Aberdeen | MD | $0 |
| Harris Machine Co. | Oakes | ND | Subcontractor |
| Hart Industries LLC | Sterling Heights | MI | Subcontractor |
| Harvan Manufacturing Ltd. | Woodstock | ON | Subcontractor |
| Hawkeye Precision Inc. | Gilbert | AZ | Subcontractor |
| Hawkins Machine Company, Inc. | Coventry | RI | $0 |
| Hayes Bruce | San Diego | CA | $0 |
| Heartland Machine & Tool, Inc. | New Hartford | IA | $0 |
| Hefner Machine & Tool, Inc. | Hatfield | PA | Subcontractor |
| Helanbak, LLC | Columbia | MS | $0 |
| Henry Machine, Inc. | Vista | CA | Subcontractor |
| Hera Technologies, LLC | Ontario | CA | Subcontractor |
| Hexagon Machine & MFG., LLC | Longmont | CO | Subcontractor |
| H & H Machine Shop Of Akron Inc. | Akron | OH | $0 |
| High Precision Grinding & Machining, Inc. | El Cajon | CA | Subcontractor |
| High Speed CNC | Santa Clara | CA | Subcontractor |
| Hightech Machining Inc. | Pacoima | CA | $0 |
| High Tech Solutions LLC | Lees Summit | MO | Subcontractor |
| Highway Machine Co. Inc. | Princeton | IN | $0 |
| Hi-tech Compressor & Pump Products, Inc. | Bristol | PA | $0 |
| Hi Tech Machining & Engineering LLC | Tucson | AZ | Subcontractor |
| Hi-tech Precision Machining, Inc. | San Jose | CA | $0 |
| Hochbaum Machine Services, Inc. | Hebron | IN | $0 |
| Hoefner Corporation | South El Monte | CA | Subcontractor |
| Hoffman's Machine Shop, LLC | Milton | PA | $0 |
| Hoff's Machine And Welding Corporation, Inc. | Salina | KS | $0 |
| Hollis Line Machine Co. Inc. | Milford | NH | Subcontractor |
| Holt Tool & Machine, Inc. | Redwood City | CA | Subcontractor |
| Homeyer Precision Manufacturing Co. | Marthasville | MO | Subcontractor |
| Hoosier, Inc. | Corona | CA | Subcontractor |
| Hoppe Technologies, Inc. | Chicopee | MA | Subcontractor |
| Horizon Aviation & Machining, Inc. | Surprise | AZ | Subcontractor |
| Horizon Engineering, Inc. | Poway | CA | Subcontractor |
| Horspool & Romine MFG Co. Inc. | Oakland | CA | Subcontractor |
| Hot Shot Fabrication LLC | Watkins | CO | Subcontractor |
| Howell Laboratories, Inc. | Gorham | ME | Subcontractor |
| Howland Machine Corp. | Niles | OH | Subcontractor |
| HPG LP | Milton | ON | Subcontractor |
| H. P. Machine And Engineering, Inc. | San Jose | CA | Subcontractor |
| H R Edgar Machining & Fabricating, Inc. | New Kensington | PA | Subcontractor |
| Hubbell Machine Co. Inc. | Paso Robles | CA | $0 |
| Hub Pattern Corporation | Roanoke | VA | Subcontractor |
| Huffman Welding & Machine, Inc. | Fort Madison | IA | $0 |
| Hughes Machine Shop, Inc. | Bogalusa | LA | Subcontractor |
| Humboldt Machine Shop, Inc. | Huntsville | AL | Subcontractor |
| Hunt Design & Manufacturing Inc. | Arab | AL | Subcontractor |
| Hydracore Inc. | Metuchen | NJ | Subcontractor |
| I. Auman Machine Co. Inc. | Lebanon | PA | Subcontractor |
| Icon Machine Co. LLC | Irving | TX | Subcontractor |
| Idl Precision Machining, L.L.C | Mukilteo | WA | Subcontractor |
| Idp Tm, Inc. | Rockwall | TX | Subcontractor |
| Img Companies, LLC | Livermore | CA | Subcontractor |
| Img Larkin, LLC | Scotts Valley | CA | Subcontractor |
| Independence Precision Machining, LLC | Roseville | CA | Subcontractor |
| Indian Springs MFG. Co. Inc. | Baldwinsville | NY | $0 |
| Industrial Consortium Inc. | Lancaster | PA | $0 |
| Industrial Machine Works, Incorporated | Waynesboro | VA | $0 |
| Industrial Manufacturing Specialties, Inc. | Decatur | AL | Subcontractor |
| Industrial Specialty Co. Inc. | Montgomery | AL | Subcontractor |
| Infinisys Manufacturing LLC | Phoenix | AZ | Subcontractor |
| In-flo Designs | Santa Clara | CA | $0 |
| Innotech Machining, Inc. | Brighton | CO | $0 |
| Instrument Development Company LLC | Mukwonago | WI | Subcontractor |
| Integrated Components, Inc. | Wichita | KS | Subcontractor |
| Integrated Ideas & Technologies Inc. | Coeur D Alene | ID | Subcontractor |
| Integrated Machining Co. | Albuquerque | NM | Subcontractor |
| Integration Inc. | Albuquerque | NM | Subcontractor |
| Integrity Manufacturing Co. | Colorado Springs | CO | Subcontractor |
| Intellicut Incorporated | Middleton | MA | Subcontractor |
| Interactive Manufacturing, Inc. | Central Point | OR | Subcontractor |
| International Aero Engineering, LLC | Bellflower | CA | Subcontractor |
| International Tool And Manufacturing, Inc. | Fairfield | NJ | Subcontractor |
| Intrepid Machine, Inc. | Brooksville | FL | Subcontractor |
