Verified Nov 2026
Electronics & Software
·
Shelton, Connecticut
·
Since 1947
Butler Aerospace & Defense is an engineering solutions provider headquartered in Shelton, Connecticut, United States, founded in 1947. It has an estimated 500-1,000 employees and an estimated revenue band of $50-100 million. The company operates as a subsidiary of HCLTech and serves the aerospace, defense, automotive, electronics, electric-vehicle, and industrial equipment industries. Its offerings span systems engineering, mechanical and structural design, software development, and advanced manufacturing, and it has pursued a Missile Defense Agency SHIELD IDIQ contract award.
Butler Aerospace & Defense at a glance
Revenue
$50-100M
Est. band
Employees
500-1,000
Founded
1947
Headquarters
Shelton, Connecticut
Certifications
AS9100 · ISO 9001 · ITAR registered
Industries
Automotive
Electric Vehicles
Electronics
Military & Defense
Industrial Equipment
Aerospace
STABILITY SIGNALS
Established & active
79 years in operation (founded 1947).
Holds AS9100, ISO 9001, ITAR registered certification(s) per public sources.
Overview
Butler Aerospace & Defense is an engineering solutions provider headquartered in Shelton, Connecticut, United States, founded in 1947. It has an estimated 500-1,000 employees and an estimated revenue band of $50-100 million. The company operates as a subsidiary of HCLTech and serves the aerospace, defense, automotive, electronics, electric-vehicle, and industrial equipment industries. Its offerings span systems engineering, mechanical and structural design, software development, and advanced manufacturing, and it has pursued a Missile Defense Agency SHIELD IDIQ contract award.
At a glance
Attribute | Detail |
|---|---|
Founded | 1947 |
Headquarters | Shelton, Connecticut |
Employees | 500-1,000 |
Revenue | $50-100M (estimated) |
Primary capability | Electronics & Software |
Certifications | AS9100 · ISO 9001 · ITAR registered |
What Butler Aerospace & Defense makes
The company holds AS9100, ISO 9001, and ITAR registration, and its catalog includes electronics, tooling, and semiconductor-related work.
Products and capabilities described on the company's own site include Tooling, Electronics, Semiconductor (source: butler.com).
Certifications
Butler Aerospace & Defense is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — butler.com
ISO 9001 — engineeringfirms.us
ITAR registered — butler.com
Latest developments
2026-09-11 — BUTLER NATIONAL CORPORATION ANNOUNCES FIRST QUARTER 2027 FINANCIAL RESULTS - Butler National Corporation (butlernational.com)
2026-08-17 — Butler National Strengthens Aerospace Manufacturing Platform Through Strategic Rebranding of Butler Machine - Butler National Corporation (butlernational.com)
2026-03-13 — BUTLER NATIONAL CORPORATION ANNOUNCES THIRD QUARTER 2026 FINANCIAL RESULTS – Butler National Corporation (butlernational.com)
2025-12-11 — BUTLER NATIONAL CORPORATION ANNOUNCES SECOND QUARTER 2026 FINANCIAL RESULTS – Butler National Corporation (butlernational.com)
2025-09-10 — Home - Butler Aerospace & Defense (butler.com)
Facilities
Butler Aerospace & Defense is headquartered in Shelton, Connecticut. Public sources also reference these locations:
Shelton, Connecticut — engineeringfirms.us
Company details
Butler Aerospace & Defense is a privately held subsidiary of HCLTech and serves major aerospace and defense clients, including the U.S. Department of Defense and federal agencies. Butler Aerospace & Defense was founded in 1947, has an estimated 500-1,000 employees, and is headquartered in Shelton, Connecticut. On the LightSource stability read it is rated "Established & active": 79 years in operation (founded 1947). Holds AS9100, ISO 9001, ITAR registered certification(s) per public sources.
Frequently asked questions
What does Butler Aerospace & Defense make?
Butler Aerospace & Defense is an engineering solutions provider headquartered in Shelton, Connecticut, United States, founded in 1947. It has an estimated 500-1,000 employees and an estimated revenue band of $50-100 million. The company operates as a subsidiary of HCLTech and serves the aerospace, defense, automotive, electronics, electric-vehicle, and industrial equipment industries. Its offerings span systems engineering, mechanical and structural design, software development, and advanced manufacturing, and it has pursued a Missile Defense Agency SHIELD IDIQ contract award.
Where is Butler Aerospace & Defense headquartered?
Butler Aerospace & Defense is headquartered in Shelton, Connecticut (2 Trap Falls Rd, Shelton, Connecticut, 06484-4603).
When was Butler Aerospace & Defense founded?
Butler Aerospace & Defense was founded in 1947.
How big is Butler Aerospace & Defense?
Butler Aerospace & Defense has an estimated 500-1,000 employees, with revenue in the $50-100M range (estimated).
What certifications does Butler Aerospace & Defense hold?
Butler Aerospace & Defense lists AS9100 · ISO 9001 · ITAR registered on its website. Confirm the certified scope for the specific plant producing your part.
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Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
+1 203-926-2700
Certification
AS9100 · ISO 9001 · ITAR registered
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