Prob-test INC
364 W Tullock St, Rialto, CA 92376
Operating signal within 12 months from two or more independent sources.
What they make
Other Electronic Component Manufacturing334419- opto-electronics
- military training equipment
- electronic components
- lasers
- optics
- alignment
- cables
- batteries
- printed circuit cards
- sensors industry
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Products
Where these came from
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Tri Star Electronics Intl INC | Riverside | Electronic Connector Manufacturing 334417 | UNVERIFIED | 6.7 KM |
| R&r Machine Products INC. | San Bernardino | Other Electronic Component Manufacturing 334419 | LIKELY ACTIVE | 7.2 KM |
| Bourns, Inc. - Auburn Hills, MI | Riverside | Other Electronic Component Manufacturing 334419 | LIKELY ACTIVE | 9.0 KM |
| Astro Seal, INC | Riverside | Electronic Connector Manufacturing 334417 | ACTIVE | 9.0 KM |
| Systems Electronics, INC. | Riverside | Other Electronic Component Manufacturing 334419 | LIKELY ACTIVE | 9.2 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
3 sources hold this plant, and 9 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen OCT 2026
- SAM.gov entity registrationOPERATINGRecord QJL2EGMQ6GU7 · first seen JAN 2026 · last seen JAN 2026
- SBA 7(a) and 504 loan recordsEXISTENCEfirst seen JUN 2011 · last seen JUN 2011
IN SAN BERNARDINO COUNTY40 other plants share this one’s industry (Semiconductor and Other Electronic Component Manufacturing, NAICS 3344); 9 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- SAM.gov: PROB-TEST INC · JAN 2026
- Street address
- SAM.gov: 364 W TULLOCK ST · JAN 2026
- City
- SAM.gov: RIALTO · JAN 2026
- State
- SAM.gov: CA · JAN 2026
- Coordinates
- Census geocoder: 34.076458669575,-117.375420880305 · JUL 2026
- Website
- SAM.gov: http://www.probtest.com · JAN 2026
- CAGE code
- SAM.gov: 0BM74 · JAN 2026
- SAM registration expires
- SAM.gov: 2027-01-06 · JAN 2026
- SBA loans
- SBA: 7a loan x1, jobs 17.0 · JUN 2011

