Semco Instruments, INC.
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersBranford, CT
SAM.gov UEINot registered
HarcoSemco manufactures aerospace components including sensors, harnesses, and landing gear. The company produces sensors that measure temperature, air flow, and pressure, and utilizes thermocouples and RTD sensors in its products. It serves the fixed wing and engine industries, providing components for flight control, environmental control, and fuel systems.
Summarized from the company’s own website
CareersCareers page — seen SEP 9, 2026
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Semco Instruments, INC. | Branford | CT | — | 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.


