Verified Nov 2026
Other
·
Killingly, Connecticut
·
Since 1948
Spirol is a manufacturer of engineered fasteners, joining products, and installation equipment, headquartered in Killingly, Connecticut, United States. Founded in 1948, the company has an estimated 500 to 1,000 employees and an estimated revenue band of $10 to $50 million. It is privately held and serves the automotive, plumbing hardware, and industrial equipment industries. In February 2026, the company received a 2025 Supplier Excellence Recognition Award from Caterpillar.
Spirol at a glance
Revenue
$10-50M
Est. band
Employees
500-1,000
Founded
1948
Headquarters
Killingly, Connecticut
Certifications
AS9100 · IATF 16949 · ISO 14001 · ISO 9001 · ISO/TS 16949 · ITAR registered · Nadcap
Import activity
486
Industries
Automotive
Plumbing & Hardware
Industrial Equipment
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
486
Named foreign suppliers
27
Top origins
United Kingdom · Mexico · Canada · China
Shared foreign counterparties do not establish that these companies buy from Spirol.
What this tells a buyer
No customs shipment data is available in the record, and the most recent reported development is a February 2026 supplier award from Caterpillar.
The company's listed capabilities include tooling, assembly, and fastener products, and it holds AS9100, IATF 16949, ISO 9001, ISO 14001, and Nadcap certifications along with ITAR registration.
Spirol is privately held and, per the record, has reported Caterpillar as a customer, and in July 2026 it received a General Motors 2025 Supplier Quality Excellence Award.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
78 years in operation (founded 1948).
Holds AS9100, IATF 16949, ISO 14001, ISO 9001, ISO/TS 16949, ITAR registered, Nadcap certification(s) per public sources.
Overview
Spirol is a manufacturer of engineered fasteners, joining products, and installation equipment, headquartered in Killingly, Connecticut, United States. Founded in 1948, the company has an estimated 500 to 1,000 employees and an estimated revenue band of $10 to $50 million. It is privately held and serves the automotive, plumbing hardware, and industrial equipment industries. In February 2026, the company received a 2025 Supplier Excellence Recognition Award from Caterpillar.
At a glance
Attribute | Detail |
|---|---|
Founded | 1948 |
Headquarters | Killingly, Connecticut |
Employees | 500-1,000 |
Revenue | $10-50M (estimated) |
Certifications | AS9100 · IATF 16949 · ISO 14001 · ISO 9001 · ISO/TS 16949 · ITAR registered · Nadcap |
What Spirol makes
The company's listed capabilities include tooling, assembly, and fastener products, and it holds AS9100, IATF 16949, ISO 9001, ISO 14001, and Nadcap certifications along with ITAR registration.
Products and capabilities described on the company's own site include Tooling, Assembly, Fastener, Battery (source: spirol.com).
Certifications
Spirol is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — spirolshims.com
IATF 16949 — spirol.com
ISO 14001 — spirol.com
ISO 9001 — fastening-solutions.co.uk
ISO/TS 16949 — spirol.com
ITAR registered — spirol.com
Nadcap — spirolshims.com
Trade and customs footprint
No customs shipment data is available in the record, and the most recent reported development is a February 2026 supplier award from Caterpillar. US customs bill-of-lading records list 486 inbound shipments across 27 foreign suppliers, with top origins including United Kingdom · Mexico · Canada · China.
Known customers
The counterparties below come from public sources that state the relationship directly. A shared counterparty does not by itself establish a current buying relationship unless the source says so:
Caterpillar — reported by spirol.com
Latest developments
2026-09-01 — SPIROL to Showcase Fastener Installation Equipment Demonstrations at Medical Technology Ireland | SPIROL (spirol.com)
2026-09-01 — News (Press Releases) | SPIROL (spirol.com)
2026-08-04 — SPIROL Expands eCommerce to Include Metal Spacers | SPIROL (spirol.com)
2026-07-31 — SPIROL Receives General Motors 2025 Supplier Quality Excellence Award | SPIROL (spirol.com)
2026-02-24 — SPIROL Receives 2025 Supplier Excellence Recognition Award from Caterpillar | SPIROL (spirol.com)
2025-12-08 — Spirol Launches Press-N-Lok Pin for Secure Plastic Assembly - Fast (fastening-solutions.co.uk)
Facilities
Spirol is headquartered in Killingly, Connecticut. Public sources also reference these locations:
Czech Republic — fastening-solutions.co.uk
Company details
Spirol is privately held and, per the record, has reported Caterpillar as a customer, and in July 2026 it received a General Motors 2025 Supplier Quality Excellence Award. Spirol was founded in 1948, has an estimated 500-1,000 employees, and is headquartered in Killingly, Connecticut. On the LightSource stability read it is rated "Established & active": 78 years in operation (founded 1948). Holds AS9100, IATF 16949, ISO 14001, ISO 9001, ISO/TS 16949, ITAR registered, Nadcap certification(s) per public sources.
Frequently asked questions
What does Spirol do?
Spirol is a manufacturer of engineered fasteners, joining products, and installation equipment, headquartered in Killingly, Connecticut, United States. Founded in 1948, the company has an estimated 500 to 1,000 employees and an estimated revenue band of $10 to $50 million. It is privately held and serves the automotive, plumbing hardware, and industrial equipment industries. In February 2026, the company received a 2025 Supplier Excellence Recognition Award from Caterpillar.
Where is Spirol headquartered?
Spirol is headquartered in Killingly, Connecticut (30 Rock Ave, Killingly, Connecticut, 06239).
When was Spirol founded?
Spirol was founded in 1948.
How big is Spirol?
Spirol has an estimated 500-1,000 employees, with revenue in the $10-50M range (estimated).
What certifications does Spirol hold?
Spirol lists AS9100 · IATF 16949 · ISO 14001 · ISO 9001 · ISO/TS 16949 · ITAR registered · Nadcap on its website. Confirm the certified scope for the specific plant producing your part.
Does Spirol import from overseas suppliers?
US customs bill-of-lading records show 486 inbound shipments for Spirol, with top origins including United Kingdom · Mexico · Canada · China.
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Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
+1 860-774-8571
Certification
AS9100 · IATF 16949 · ISO 14001 · ISO 9001 · ISO/TS 16949 · ITAR registered · Nadcap
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