Hoefner Corporation
9722 Rush St, South El Monte, CA 91733
Operating signal within 12 months from two or more independent sources.
What they make
Machine Shops332710Oefner Corporation operates 2-8 axis machining equipment and provides assembly and testing services. The company specializes in machining, assembly, and testing of customer-designed hydraulic, pneumatic, hydrostatic, and electromechanical valves and assemblies. The company holds AS9100 REV. C, ISO9001-2008, and ASQR-01 certifications.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Engineering Design Industries, INC. | S El Monte | Machine Shops 332710 | ACTIVE | 0.1 KM |
| Mikes Micro Parts INC | South El Monte | Cutlery and Handtool Manufacturing 332214 | LIKELY ACTIVE | 0.2 KM |
| S&h Melkes | South El Monte | Machine Shops 332710 | LIKELY ACTIVE | 0.5 KM |
| Amro Fabricating CORP | South El Monte | Custom Roll Forming 332114 | ACTIVE | 0.7 KM |
| Calfabco INC Dba Mr. Washerman | South El Monte | Machine Shops 332710 | UNVERIFIED | 0.7 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 3 FEDERAL SOURCES, 9 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in CA-CERS, CA-ENVIROVIEW, HWTS-DATAMART, RCRAINFO · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| SAM GOV | OPERATING | APR 2026 | APR 2026 |
| EPA FRS | EXISTENCE | OCT 2015 | OCT 2015 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| ADDRESS LINE1 | SAM GOV | APR 2026 |
| CAGE CODE | SAM GOV | APR 2026 |
| CITY | EPA FRS | JUL 2026 |
| CITY | SAM GOV | APR 2026 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| NAME | SAM GOV | APR 2026 |
| REGISTRATION EXPIRATION | SAM GOV | APR 2026 |
| STATE | EPA FRS | JUL 2026 |
| STATE | SAM GOV | APR 2026 |
| WEBSITE | SAM GOV | APR 2026 |
| YEAR ESTABLISHED | SITE YEAR | AUG 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.