| company | role | hq | verified |
| Bobs Electric Mtr | DIST | Denver, CO (US) | 1 mfrs |
| Bohl's Bearing | DIST | Laredo, TX (US) | 1 mfrs |
| Boilers Controls & Equip. INC | DIST | Toledo, OH (US) | 1 mfrs |
| Boise Electric Motor CO, INC | DIST | Boise, ID (US) | 1 mfrs |
| Brandon & Clark Elec | DIST | Odessa, TX (US) | 1 mfrs |
| Brannon Elec Mtr CO | DIST | Birmingham, AL (US) | 1 mfrs |
| Brazil Motors & Controls | DIST | Portland, OR (US) | 1 mfrs |
| Brehob Corporation | DIST | Indianapolis, IN (US) | 1 mfrs |
| Brennan Engineering INC | DIST | Gillette, WY (US) | 1 mfrs |
| Brenner Ind Sls & Sply C | DIST | Youngstown, OH (US) | 1 mfrs |
| BREON'S, INC | DIST | Pleasant Gap, PA (US) | 1 mfrs |
| Brewer Machine brewermachine.com | MFG DIST | St Louis, MO (US) | 1 mfrs |
| Bridgeway Power | DIST | New Hudson, MI (US) | 1 mfrs |
| Britton Electric Motor INC | DIST | Oklahoma City, OK (US) | 1 mfrs |
| Brophy Electric | DIST | Imperial, NE (US) | 1 mfrs |
| Brown-Milbery INC | DIST | Reno, NV (US) | 1 mfrs |
| Brown Trans & Brg CO | DIST | Lancaster, PA (US) | 1 mfrs |
| Brownwood Electric Motor | DIST | Brownwood, TX (US) | 1 mfrs |
| Bruning Enterprises | DIST | Shelbyville, IN (US) | 1 mfrs |
| Buckeye Corporation | MFG DIST | El Dorado, KS (US) | 1 mfrs |