| HEH&h Engineered Coatings | Haltom City | TX | — | ◇ UNVERIFIED |
| HHH H Fabrication and Repair LLC | Winsted | MN | — | ◇ UNVERIFIED |
| HHH & H Machine INC | Carthage | MO | — | ◇ UNVERIFIED |
| HHH & H Machinery | Brenham | TX | — | ◇ UNVERIFIED |
| HPH&h Polishing LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| HPHialeah Plating Shop INC | Hialeah | FL | — | ◇ UNVERIFIED |
| HIHiatt Industries, LLC | Winona | MN | — | ◇ UNVERIFIED |
| HSHibshman Screw Machine Prod INC | Union | MI | — | ◇ UNVERIFIED |
| HMHickey Metal Fabrication and Roofing Company | Salem | OH | — | ◇ UNVERIFIED |
| HMHicks Machine | Walpole | NH | — | ◇ UNVERIFIED |
| HBHigh Bar Brands | Fresno | CA | — | ◇ UNVERIFIED |
| HCHigh Caliber Fab LLC | Kiel | WI | — | ◇ UNVERIFIED |
| HMHighland Manufacturing Inc. | Manchester | CT | — | ◇ UNVERIFIED |
| HMHighland Metal, INC. | Hillside | IL | — | ◇ UNVERIFIED |
| HPHighland Plating CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| HSHighland Supply CORP | Redlands | CA | — | ◇ UNVERIFIED |
| HCHighline Controls INC | Livermore | CA | — | ◇ UNVERIFIED |
| HLHigh Lustre Metal Finishing | Hayward | CA | — | ◇ UNVERIFIED |
| HPHigh Precision Partners LLC | Macedon | NY | — | ◇ UNVERIFIED |
| HPHigh Pressure Gas Cylndr. | Longview | TX | — | ◇ UNVERIFIED |
| HQHigh Quality Machine INC | San Jose | CA | — | ◇ UNVERIFIED |
| HRHigh Range Diesel Service L.L.C. | Maple Lake | MN | — | ◇ UNVERIFIED |
| HCHigh-star Corporation | Garden City | MI | — | ◇ UNVERIFIED |
| HTHigh Tech Containers LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| HTHigh Tech Manufacturing Services | Vancouver | WA | — | ◇ UNVERIFIED |
| HTHigh Tech Plating | Englewood | CO | — | ◇ UNVERIFIED |
 High Tech Solutions LLC | Lees Summit | MO | — | ◇ UNVERIFIED |
| HPHightower Plating & Manufacturing CO | Orange | CA | — | ◇ UNVERIFIED |
| HMHighway Machine Company, INC | Princeton | IN | — | ◇ UNVERIFIED |
| HMHignite Metal Fabricating | Rush Springs | OK | — | ◇ UNVERIFIED |
| HWHi-grade Welding and Manufacturing, LLC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| HPHiles Plating Company INC. | Kansas City | MO | — | ◇ UNVERIFIED |
| HIHi-line Industrial Saw & Supply INC. | Orange | CA | — | ◇ UNVERIFIED |
| HMHi-Lite Machine Company | Oostburg | WI | — | ◇ UNVERIFIED |
| HMHillbilt Metal Works LLC | Kinston | NC | — | ◇ UNVERIFIED |
| HMHillcore Machine, INC. | Portland | OR | — | ◇ UNVERIFIED |
| HCHill Country Rifle Company INC | New Braunfels | TX | — | ◇ UNVERIFIED |
| HIHilliard Investments of Missouri, LLC | Hazelwood | MO | — | ◇ UNVERIFIED |
| HEHillman Extrusion Tool INC | Lincoln | MI | — | ◇ UNVERIFIED |
| HMHill Manufacturing, INC. | Broken Arrow | OK | — | ◇ UNVERIFIED |
| HAHillock Anodizing INC | Philadelphia | PA | — | ◇ UNVERIFIED |
| H2Hillsdale 210 Investments LLC | San Jose | CA | — | ◇ UNVERIFIED |
| HSHilti Steel Industry Division | New Castle | PA | — | ◇ UNVERIFIED |
| HUHilti U.s Manufacturing | Cypress | CA | — | ◇ UNVERIFIED |
| HMHindley Manufacturing Co., INC. | Cumberland | RI | — | ◇ UNVERIFIED |
| HMHirsch Machine, INC | Sunnyvale | CA | — | ◇ UNVERIFIED |
| HTHi-shear Technology CORP | Torrance | CA | — | ◇ UNVERIFIED |
| HMHi-Standard Manufacturing, Inc. | Long Beach | CA | — | ◇ UNVERIFIED |
| HAHitachi Astemo Indiana, INC. | Greenfield | IN | — | ◇ UNVERIFIED |
| HIHitech, INC. | Moore | OK | — | ◇ UNVERIFIED |
| HIHi-tech Industries, LLC | Broken Arrow | OK | — | ◇ UNVERIFIED |
| HTHi Tech Machine Shop | Fontana | CA | — | ◇ UNVERIFIED |
| HTHi Tech Machine Shop LLC | Jurupa Valley | CA | — | ◇ UNVERIFIED |
 Hi-tech Machining & Engineering, L.l.c. | Tucson | AZ | — | ◇ UNVERIFIED |
| HMHi-tech Metal, INC. | Denton | TX | — | ◇ UNVERIFIED |
| HSHi-tech Stencils | Orange | CA | — | ◇ UNVERIFIED |
| HWHi-tech Welding | Lees Summit | MO | — | ◇ UNVERIFIED |
| HMHitec Metal Fabrication CORP. | Anaheim | CA | — | ◇ UNVERIFIED |
| HLHitek LLC | Saint Peters | MO | — | ◇ UNVERIFIED |
| HMHi-tek Manufacturing INC. | Mason | OH | — | ◇ UNVERIFIED |
| HKH & K Tool and Machine Co., INC. | Huntingdon Valley | PA | — | ◇ UNVERIFIED |
| HMHLN Machining LLC | Bryan | OH | — | ◇ UNVERIFIED |
| HDH.m. Dunn Company INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| HHH.M. Hillman Brass & Copper, Inc. | Honey Brook | PA | — | ◇ UNVERIFIED |
| HIHMLJ Industries, LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| HCHmq Chemtech | Oriskany | NY | — | ◇ UNVERIFIED |
| HUH+m USA Management Company, Inc.dba Hinderer + Mue | Charlotte | NC | — | ◇ UNVERIFIED |
| HPHNH Properties LLC | Houston | TX | — | ◇ UNVERIFIED |
| HPHn Precision INC. | Rochester | NY | — | ◇ UNVERIFIED |
| HTHoa Tran | Morgan Hill | CA | — | ◇ UNVERIFIED |
| HOHockley Oilfield Supply | Levelland | TX | — | ◇ UNVERIFIED |
| HEHockmeyer Equipment CORP. | Elizabeth City | NC | — | ◇ UNVERIFIED |
| HMHodgenville Machine - Tool LLC | White City | KY | — | ◇ UNVERIFIED |
| HSHodgson Specialty Engineering | Chesapeake | VA | — | ◇ UNVERIFIED |
| HMHogan Manufacturing | Escalon | CA | — | ◇ UNVERIFIED |
| HMHogan Mfg INC | Stockton | CA | — | ◇ UNVERIFIED |
| HDHogg & Davis INC | Odell | OR | — | ◇ UNVERIFIED |
| HLHoldings, LLC | Mc Gregor | TX | — | ◇ UNVERIFIED |
| HPHoldren Precision Machining, Inc. | Ulster | PA | — | ◇ UNVERIFIED |
| HCHolfam CORP Dba Holland Industries | North Hollywood | CA | — | ◇ UNVERIFIED |
| HDHolley Distribution Center | Bowling Green | KY | — | ◇ UNVERIFIED |
| HTHolly Tool & Die, INC. | Holly Springs | MS | — | ◇ UNVERIFIED |
| HMHolst Machine Shop | Goddard | KS | — | ◇ UNVERIFIED |
| HPHolts Precision, INC. | South Windsor | CT | — | ◇ UNVERIFIED |
| HFHolyfield Forge & Fabriation | Lewiston | ID | — | ◇ UNVERIFIED |
| HHHolzknecht Holding, LLC | Putnam | CT | — | ◇ UNVERIFIED |
| HSHomeland Security Safe Company | Pico Rivera | CA | — | ◇ UNVERIFIED |
| HTHomestead Tool and Machine INC | Coleman | MI | — | ◇ UNVERIFIED |
| HTHome Tool and Machine LLC | Spring Lake Park | MN | — | ◇ UNVERIFIED |
| HRHondas R&d Americas | Ann Arbor | MI | — | ◇ UNVERIFIED |
| HIHoneywell International | Cicero | IL | — | ◇ UNVERIFIED |
| HIHoneywell International INC (former Aero Quality Plating Site) | Oakland | CA | — | ◇ UNVERIFIED |
| HAHonsa Acquisition, LLC | Milan | IL | — | ◇ UNVERIFIED |
| HAHonsa Acquisition, LLC | Milan | IL | — | ◇ UNVERIFIED |
| HEHood Eic, LLC | Sparks | NV | — | ◇ UNVERIFIED |
| HUHoover Universal INC | Riverside | MO | — | ◇ UNVERIFIED |
| HEHope Enterprises LLC | Saint Augustine | FL | — | ◇ UNVERIFIED |
| HSHope Street Capital LLC | Anaheim | CA | — | ◇ UNVERIFIED |
| HMHopkins Manufacturing (stormwater) | Emporia | KS | — | ◇ UNVERIFIED |
| HMHopper Machine LLC | Shortsville | NY | — | ◇ UNVERIFIED |
