| HMHarley-davidson Motor Co- Industrial Park Facility | Tomahawk | WI | — | ◇ UNVERIFIED |
| HCHarmonson Construction Auto | Clovis | CA | — | ◇ UNVERIFIED |
| HCHarrison Customs INC | Tracy | CA | — | ◇ UNVERIFIED |
| HAHarrys Automotive Service | Stratford | NJ | — | ◇ UNVERIFIED |
| HEHartmann Exhibits & Displays INC | Beaverton | OR | — | ◇ UNVERIFIED |
| HLHayes Lemmerz International INC | Howell | MI | — | ◇ UNVERIFIED |
| HLHayes Lemmerz Intl Ky INC | Somerset | KY | — | ◇ UNVERIFIED |
| HHHBCS Hi-Bar Custom Services LLC | Houston | TX | — | ◇ UNVERIFIED |
| HAHc Automotive Repair & Repair | Clovis | CA | — | ◇ UNVERIFIED |
| HRHd Ramps, LLC | Kewaskum | WI | — | ◇ UNVERIFIED |
 Hearthstone Enterprises INC Dba Charleston Forge Plant V | Boone | NC | — | ◇ UNVERIFIED |
| HSHeartland Steel Products, LLC | Marysville | MI | — | ◇ UNVERIFIED |
| HAHectors Alternators | Montclair | CA | — | ◇ UNVERIFIED |
| HMHedman Manufacturing, INC | Whittier | CA | — | ◇ UNVERIFIED |
| HIHeeger INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| HMHench Mfg. INC. | San Clemente | CA | — | ◇ UNVERIFIED |
| HEHenderson Electric Motors | Kenova | WV | — | ◇ UNVERIFIED |
| HMHercules Machine Shop | Huntington Park | CA | — | ◇ UNVERIFIED |
| HNHerman Noppenberger | Costa Mesa | CA | — | ◇ UNVERIFIED |
| HIHgh Imports Dba Timberland Cabinetry CO | Spring Hill | TN | — | ◇ UNVERIFIED |
| HFHickory Frameworks, INC. | Hickory | NC | — | ◇ UNVERIFIED |
| HSHickory Springs Manufacturing CO. - Hickory Metals Complex | Hickory | NC | — | ◇ UNVERIFIED |
| HBHigh Bar Brands | Fresno | CA | — | ◇ UNVERIFIED |
| HHHighland Holdings, LLC | Minneapolis | MN | — | ◇ UNVERIFIED |
| HQHigh Quality Machine INC | San Jose | CA | — | ◇ UNVERIFIED |
| HMHigh-tech Machining & Manufacturing, LLC | Ukiah | CA | — | ◇ UNVERIFIED |
| HSHilti Service Center | Visalia | CA | — | ◇ UNVERIFIED |
| HMHino Motors Manufacturing U.s.a., INC. | Ontario | CA | — | ◇ UNVERIFIED |
| HPHi Performance of America LLC | Riverside | CA | — | ◇ UNVERIFIED |
| HCHitachi Cable Automotive Products Usa, INC. | Pensacola | FL | — | ◇ UNVERIFIED |
| HTHi Tech Machine Shop LLC | Jurupa Valley | CA | — | ◇ UNVERIFIED |
| HDHolley Distribution Center | Bowling Green | KY | — | ◇ UNVERIFIED |
| HCHolmes & Company LLC | Columbia City | IN | — | ◇ UNVERIFIED |
| HPHonda Parts Unlimited | Sun Valley | CA | — | ◇ UNVERIFIED |
| HRHondas R&d Americas | Ann Arbor | MI | — | ◇ UNVERIFIED |
| HIHon Industries | Florence | AL | — | ◇ UNVERIFIED |
| HHHoosier House Furniture | Goshen | IN | — | ◇ UNVERIFIED |
| HUHoover Universal INC | Riverside | MO | — | ◇ UNVERIFIED |
| HMHopkins Manufacturing (stormwater) | Emporia | KS | — | ◇ UNVERIFIED |
| HIHoppo's INC Dba Hoppo's Custom Suspension | Riverside | CA | — | ◇ UNVERIFIED |
| HRHoru Racing | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| HLHoundLab, LLC | Hayden | ID | — | ◇ UNVERIFIED |
| HOHouse of Packaging INC | Riverside | CA | — | ◇ UNVERIFIED |
| HTHoyles Tire & Axle LLC | Maynardville | TN | — | ◇ UNVERIFIED |
| HEHrl Engineering & Manufacturing Dba Bel Air Machining | Santa Ana | CA | — | ◇ UNVERIFIED |
| HAHtna Al Plant | Jasper | AL | — | ◇ UNVERIFIED |
| HEHugo Engineering CO INC | Torrance | CA | — | ◇ UNVERIFIED |
| HMHunter Mark | Canoga Park | CA | — | ◇ UNVERIFIED |
| HAHutching Automotive Products INC | Sanford | FL | — | ◇ UNVERIFIED |
| HAHutchings Automotive Products INC | Sanford | FL | — | ◇ UNVERIFIED |
