| W.w. Grainger, Inc. | Lake Forest | IL | $1.72B |
| Giga, Inc. | Macon | GA | $128M |
| Allied Defense Industries, LLC | Kearneysville | WV | $96.8M |
| Jemni Inc. | Naples | FL | $62.4M |
| Fastenal Company | Winona | MN | $57.9M |
| Kaufman Company, Inc. | Norwood | MA | $56.7M |
| Ehb Supply | Silverdale | WA | $51.1M |
| Blue Cord Logistic Strategies Inc. | Goshen | IN | $41.6M |
| Midway Industrial Supply Inc. | Utica | NY | $41.5M |
| Airborne Supply Inc. | Binghamton | NY | $38.7M |
| Mallory Safety & Supply LLC | Longview | WA | $36.4M |
| Seahorse Defense Supply, LLC | Lilburn | GA | $33.9M |
| Spendsmart Group LLC | Park Ridge | IL | $30.1M |
| Ana Sourcing LLC | Oaklyn | NJ | $27.7M |
| Scott Industrial Systems, Inc. | Dayton | OH | $26.4M |
| Pelican Sales Inc. | Melbourne | FL | $22.1M |
| W & O Supply Inc. | Virginia Beach | VA | $20.5M |
| DBR Industries, Inc. | Newtown | PA | $19.9M |
| Triad Technologies LLC | Vandalia | OH | $17.1M |
| Tork Systems Inc. | Alameda | CA | $16.1M |
| Dialogic Corp. | Bensalem | PA | $15.4M |
| Genesis Jit LLC | Huntsville | AL | $13.7M |
| Hanes Supply, Inc. | Buffalo | NY | $13.5M |
| Applied Industrial Technologies, Inc. | Blue Ash | OH | $13.1M |
| Brenco Supply, Inc. | Hot Springs National Park | AR | $12.2M |
| DMG Mori USA, Inc. | Hoffman Estates | IL | $11.8M |
| Suncore Distribution LLC | Rosharon | TX | $11.6M |
| Norfolk Bearings & Supply Co. Inc. | Norfolk | VA | $11.2M |
| Linsun Industrial Group LLC | Mooresville | IN | $9.62M |
| Clean Earth Systems, Inc. | Tampa | FL | $9.54M |
| United Commercial Supply LLC | South Park | PA | $9.46M |
| Allied Tools, Inc. | Louisville | KY | $9.09M |
| Stag Enterprise, Inc. | Ball Ground | GA | $8.23M |
| Dibert Valve And Fitting Company, Incorporated | Henrico | VA | $7.53M |
| Red Letter Supply, LLC | Pendleton | SC | $7.43M |
| Wilson Company | Addison | TX | $7.21M |
| Intercontinental Bearing Supply Company, LLC | Cypress | TX | $6.76M |
| Scientific Sales, Inc. | Oak Ridge | TN | $6.64M |
| Mckenna Brytan Industries LLC | Clermont | FL | $6.34M |
| Grand Northern Products, LLC | Byron Center | MI | $6.26M |
| Midvale Group, Inc. | Saint Louis | MO | $5.97M |
| The Mallory Co. | Longview | WA | $5.71M |
| Westflex, Inc. | National City | CA | $5.6M |
| B & B Hose & Rubber Co. Inc. | Chesapeake | VA | $5.49M |
| Braketechnique Inc. | Selinsgrove | PA | $5.45M |
| Motion Industries, Inc.Chesapeake, VA · UEI HM1ABNM4J9N5 | Chesapeake | VA | $5.25M |
| White Hand Global LLC | Penn Laird | VA | $5.18M |
| Gadsden Industrial Distributors, Inc. | Rainbow City | AL | $5.15M |
| Rayco Supply, Inc. | Virginia Beach | VA | $5.15M |
| Guy L Warden & Sons | Cerritos | CA | $5.13M |
| Tri-state Technical Sales Corp. | Malvern | PA | $4.9M |
| P & C Industrial Supplies, Incorporated | Grass Lake | MI | $4.79M |
| Staver Hydraulics Co. Inc. | Sayre | PA | $4.76M |
| A.d.a. Supplies & Leasing Services, Inc. | Warner Robins | GA | $4.71M |
| W. & O. Supply, Inc. | Virginia Beach | VA | $4.39M |
| R. A. Rodriguez, Incorporated | Port Washington | NY | $4.38M |
| Liberty Distributors Inc. | Triadelphia | WV | $4.26M |
| Neal Supply And Rental, LLC | Houma | LA | $4.25M |
| Lotus Logistics LLC | Wilmington | DE | $4M |
| Business Industrial & Institutional Supply Co. | Sulphur Springs | TX | $3.85M |
| Valve Automation And Control Of San Diego | Chula Vista | CA | $3.77M |
| Canam Minerals, Inc. | Danville | CA | $3.54M |
| Uline Inc. | Pleasant Prairie | WI | $3.47M |
| H & C Tool Supply Corp. | Rochester | NY | $3.43M |
| Weimer Bearing & Transmission Inc. | Sioux Falls | SD | $3.42M |
| Motion Industries, Inc.Hillsboro, OR · UEI H3WHLUEF9VC4 | Hillsboro | OR | $3.35M |
| A-pak Solutions | Seabeck | WA | $3.34M |
| Up Enterprises LLC | Larkspur | CO | $3.2M |
| QMP Enterprises, Inc. | Phoenix | NY | $3.1M |
| Blanchard Industrial Supplies, Inc. | Troy | NY | $3.08M |
| Ves Co. Inc. | Las Vegas | NV | $3.06M |
| Laine Industries, Inc. | Lake City | FL | $3.05M |
| Centrex Technical Sales LLC | Oilville | VA | $3.02M |
| Allvet Packaging LLC | Newnan | GA | $3.01M |
| Bisonte Industrial USA LLC | Baltimore | MD | $2.98M |
| National Material Supply Company, LLC | Dallas | TX | $2.86M |
| Element Six Technologies U.S. Corporation | Santa Clara | CA | $2.78M |
| Chas. D. West & Co. | Puyallup | WA | $2.73M |
| S&G Trading, Limited Liability Company | Garnet Valley | PA | $2.68M |
| Levengood Supply Co. Inc. | East Greenville | PA | $2.56M |
| CPS Solutions LLC | Salado | TX | $2.52M |
| Alpine Supply Inc. | Anchorage | AK | $2.48M |
| Charter Industrial Supply, Inc. | San Diego | CA | $2.42M |
| MBC Products, Inc. | Prospect Park | PA | $2.38M |
| Specialty Seals & Accessories, Inc. | San Diego | CA | $2.37M |
| Veteran Distribution & Supply LLC | Ellenton | FL | $2.05M |
| Evoqua Water Technologies LLC | East Rutherford | NJ | $2.02M |
| 6B Parts LLC | Crete | IL | $1.94M |
| Tools Man, Inc. The | Davie | FL | $1.93M |
| Ives Equipment, LLC | King Of Prussia | PA | $1.91M |
| Allredi, LLC | Pasadena | TX | $1.91M |
| DXP Enterprises, Inc. | Houston | TX | $1.88M |
| M Z Technologies, Inc. | Bakersfield | CA | $1.81M |
| Industrial Supply Co. Inc. | Salt Lake City | UT | $1.81M |
| Bearing Distributors Inc. | Kansas City | MO | $1.78M |
| A & M Industrial Inc. | Rahway | NJ | $1.76M |
| R & D Metals & Chemicals, Inc. | Knoxville | TN | $1.74M |
| Kearny Steel Container Corp. | Newark | NJ | $1.72M |
| The Black Horse Company | Baghdad | | $1.66M |
| Schubert Diana | Lake Havasu City | AZ | $1.65M |
