Atro Engineered Systems, INC.
At a glance
Employees20-99
In business since1987
HeadquartersSaint Clair, MO
US patents2
SAM.gov UEICL8TL3BKCS73
CAGE code0J104
Incorporated inMO
- air springs
- hood components
- service parts
- steering
- polyurethane parts
- heavy-duty trucks
- tie rods
- tools
- trailer parts
- torque rod finder
- king pin cross reference
- suspension schematics
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit OrganizationManufacturer of GoodsSubchapter S Corporation
Self-certified by the company in its SAM.gov registration
Patents
2 US patents granted 1999–2003, none of them in the five years to SEP 2025.
Mechanical elements 2
- Low fiction rotating bushing, particularly for heavy vehicle lift axleUS 6,619,639 · granted SEP 16, 2003
- Bushing for heavy vehiclesUS 5,988,614 · granted NOV 23, 1999
Granted to ATRO Engineered Systems, Inc. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Atro Engineered Systems, INC. | Saint Clair | MO | 20–99 | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.


