| HAHiller Aircraft CORP | Firebaugh | CA | — | ◇ UNVERIFIED |
 Hitachi Energy Usa, INC. | Mount Pleasant | PA | — | ◇ UNVERIFIED |
| HTHithium Tech USA | Mesquite | TX | — | ◇ UNVERIFIED |
| HIHo-ho-kus INC | Richmond | VA | — | ◇ UNVERIFIED |
| HAHoneywell Aerospace | Urbana | OH | — | ◇ UNVERIFIED |
| HAHoneywell Automation & Control Products, Sensing & Control | Woonsocket | RI | — | ◇ UNVERIFIED |
| HGHoneywell Green Island Plant | Green Island | NY | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Vernon | CA | — | ◇ UNVERIFIED |
| HIHoneywell International INC | Troy | NY | — | ◇ UNVERIFIED |
| HIHoneywell International INC. (synertek) | Santa Clara | CA | — | ◇ UNVERIFIED |
| HAHorizon Automation & Fabrication LLC | Muncie | IN | — | ◇ UNVERIFIED |
| HAHornet Acquisitionco LLC Dba Onboard Systems | Anaheim | CA | — | ◇ UNVERIFIED |
| HAHornet Acquisitionco LLC Dba Onboard Systems | Anaheim | CA | — | ◇ UNVERIFIED |
| HAHouston Atlas | Kingwood | TX | — | ◇ UNVERIFIED |
| HRHouston R & O | Houston | TX | — | ◇ UNVERIFIED |
| HRHoward Research and Development Corp,the | Columbia | MD | — | ◇ UNVERIFIED |
| HOHrc Oregon INC | Oregon City | OR | — | ◇ UNVERIFIED |
| HTHr Textron INC | Valencia | CA | — | ◇ UNVERIFIED |
 H.s.m. Machine Works, INC. | Leland | NC | — | ◇ UNVERIFIED |
| HCHubbell Construction & Energy | Pennsauken | NJ | — | ◇ UNVERIFIED |
| HIHubbell Incorporated Dba Dmc Power, Inc., Olive Branch | Olive Branch | MS | — | ◇ UNVERIFIED |
| HTHughes Training INC | West Covina | CA | — | ◇ UNVERIFIED |
| HHydrel | Sylmar | CA | — | ◇ UNVERIFIED |
| HOHydrosolutions of Duluth INC | Duluth | MN | — | ◇ UNVERIFIED |
| HSHyko Solutions LLC | Layton | UT | — | ◇ UNVERIFIED |
| HCHyper Comp Engineering INC. | Brigham City | UT | — | ◇ UNVERIFIED |
| IMIcare Monitoring | Saint Clair Shores | MI | — | ◇ UNVERIFIED |
| IIdatech | Bend | OR | — | ◇ UNVERIFIED |
 Ideal Industries INC | Sycamore | IL | — | ◇ UNVERIFIED |
 Idex Health & Science | Carlsbad | CA | — | ◇ UNVERIFIED |
| IDIdi Distributors | Arlington | WA | — | ◇ UNVERIFIED |
| IAIe Auto Sales | Riverside | CA | — | ◇ UNVERIFIED |
| IDIlc Dover, LP - Frederica | Frederica | DE | — | ◇ UNVERIFIED |
| ITIllinois Tool Works INC | Buffalo Grove | IL | — | ◇ UNVERIFIED |
| IIImaginant INC. | Pittsford | NY | — | ◇ UNVERIFIED |
| ICIndustrial Connections & Solutions, LLC | Morristown | TN | — | ◇ UNVERIFIED |
| ICIndustrial C&s of Pr LLC - Arecibo | Arecibo | PR | — | ◇ UNVERIFIED |
| ICIndustrial C&s of Pr LLC - Vieques | Vieques | PR | — | ◇ UNVERIFIED |
| IEIndustrial Electric CORP | Beckley | WV | — | ◇ UNVERIFIED |
| IEIndustrial Electric Mfg INC | Fremont | CA | — | ◇ UNVERIFIED |
| IEIndustrial Electric Motor Service INC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| ISIndustrial Service Supply Inc. | Bridge City | TX | — | ◇ UNVERIFIED |
| IEInertia Engineering & Machine Works | Stockton | CA | — | ◇ UNVERIFIED |
| IMInferno Manufacturing Corporation | Shreveport | LA | — | ◇ UNVERIFIED |
| IBInfinity Building Solutions, LLC | Buford | GA | — | ◇ UNVERIFIED |
| ICInnovative Controls Engineering | Marshfield | MO | — | ◇ UNVERIFIED |
| ITInnovative Technology INC Dba Inovati | Goleta | CA | — | ◇ UNVERIFIED |
| IIInsco Instrumentation Services INC | Morovis | PR | — | ◇ UNVERIFIED |
| ICInstrument Control Systems INC | Plymouth | MN | — | ◇ UNVERIFIED |
| IIInsurrection Industries LLC | Winston Salem | NC | — | ◇ UNVERIFIED |
