Verified Nov 2026
Castings & Forgings
·
Marinette, Wisconsin
·
Since 1977
Winsert manufactures precision castings and machined alloy components for automotive, aerospace, medical, and industrial equipment sectors. Headquartered in Marinette, Wisconsin, and founded in 1977, the company employs 200–500 people. It acquired aerospace manufacturing assets in August 2025, expanding its capability to serve the defense and aviation industries with corrosion-resistant and high-temperature components.
Winsert at a glance
Revenue
$10-50M
Est. band
Employees
200-500
Founded
1977
Headquarters
Marinette, Wisconsin
Certifications
AS9100 · IATF 16949 · ISO 14001 · ISO 9001 · ITAR registered · Nadcap
Import activity
155
Industries
Automotive
Electric Vehicles
Medical
Industrial Equipment
Aerospace
Consumer Goods
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
155
Named foreign suppliers
9
Top origins
China · South Korea · Germany
Shared foreign counterparties do not establish that these companies buy from Winsert.
What this tells a buyer
The company received 155 documented shipments, with suppliers concentrated in China, South Korea, and Germany; China-based sources accounted for the majority of inbound components.
Winsert holds AS9100, IATF 16949, ISO 9001, ISO 14001, Nadcap, and ITAR registrations, enabling work on aerospace, automotive, and regulated industrial applications.
The company operates facilities in Marinette, Wisconsin and South Bend, Indiana, serving original equipment manufacturers and tier-one suppliers in aerospace and automotive sectors.
Source: US customs bill-of-lading records and public filings · Last verified Nov 06, 2026
STABILITY SIGNALS
Established & active
49 years in operation (founded 1977).
155 US import shipments on record.
Holds AS9100, IATF 16949, ISO 14001, ISO 9001, ITAR registered, Nadcap certification(s) per public sources.
Overview
Winsert manufactures precision castings and machined alloy components for automotive, aerospace, medical, and industrial equipment sectors. Headquartered in Marinette, Wisconsin, and founded in 1977, the company employs 200–500 people. It acquired aerospace manufacturing assets in August 2025, expanding its capability to serve the defense and aviation industries with corrosion-resistant and high-temperature components.
At a glance
Attribute | Detail |
|---|---|
Founded | 1977 |
Headquarters | Marinette, Wisconsin |
Employees | 200-500 |
Revenue | $10-50M (estimated) |
Primary capability | Castings & Forgings |
Certifications | AS9100 · IATF 16949 · ISO 14001 · ISO 9001 · ITAR registered · Nadcap |
What Winsert makes
Winsert holds AS9100, IATF 16949, ISO 9001, ISO 14001, Nadcap, and ITAR registrations, enabling work on aerospace, automotive, and regulated industrial applications.
Products and capabilities described on the company's own site include Machining, Casting, Turbocharger, Pump, Valve, Assembly, Steel (source: winsert.com).
Certifications
Winsert is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — winsert.com
IATF 16949 — winsert.com
ISO 14001 — winsert.com
ISO 9001 — winsert.com
ITAR registered — winsert.com
Nadcap — winsert.com
Trade and customs footprint
The company received 155 documented shipments, with suppliers concentrated in China, South Korea, and Germany; China-based sources accounted for the majority of inbound components. US customs bill-of-lading records list 155 inbound shipments across 9 foreign suppliers, with top origins including China · South Korea · Germany.
Latest developments
2026-10-26 — Winsert Highlights Growth, Careers and Innovation During Manufacturing Month (wearegreenbay.com)
2026-01-29 — Winsert - Business View Magazine (businessviewmagazine.com)
2025-12-01 — Winsert acquires Mack Tool & Engineering in South Bend, Indiana - The Business News (thebusinessnews.com)
2025-08-11 — Winsert Acquires Aerospace Manufacturing Assets, Expanding Capabilities and Strategic Reach | Winsert (winsert.com)
2025-08-11 — Winsert buys Indiana business to expand in aerospace market (insightonbusiness.com)
2025-08-11 — Winsert acquires Mack Tool & Engineering to enhance aerospace expertise and market reach (fox11online.com)
Facilities
Winsert is headquartered in Marinette, Wisconsin. Public sources also reference these locations:
South Bend, Indiana — altuscapitalpartners.com
Company details
The company operates facilities in Marinette, Wisconsin and South Bend, Indiana, serving original equipment manufacturers and tier-one suppliers in aerospace and automotive sectors. Winsert was founded in 1977, has an estimated 200-500 employees, and is headquartered in Marinette, Wisconsin. On the LightSource stability read it is rated "Established & active": 49 years in operation (founded 1977). 155 US import shipments on record. Holds AS9100, IATF 16949, ISO 14001, ISO 9001, ITAR registered, Nadcap certification(s) per public sources.
Frequently asked questions
What does Winsert make?
Winsert manufactures precision castings and machined alloy components for automotive, aerospace, medical, and industrial equipment sectors. Headquartered in Marinette, Wisconsin, and founded in 1977, the company employs 200–500 people. It acquired aerospace manufacturing assets in August 2025, expanding its capability to serve the defense and aviation industries with corrosion-resistant and high-temperature components.
Where is Winsert headquartered?
Winsert is headquartered in Marinette, Wisconsin (2645 Industrial Pkwy S, Marinette, Wisconsin, 54143).
When was Winsert founded?
Winsert was founded in 1977.
How big is Winsert?
Winsert has an estimated 200-500 employees, with revenue in the $10-50M range (estimated).
What certifications does Winsert hold?
Winsert lists AS9100 · IATF 16949 · ISO 14001 · ISO 9001 · ITAR registered · Nadcap on its website. Confirm the certified scope for the specific plant producing your part.
Does Winsert import from overseas suppliers?
US customs bill-of-lading records show 155 inbound shipments for Winsert, with top origins including China · South Korea · Germany.
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Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
+1 715-732-1703
Certification
AS9100 · IATF 16949 · ISO 14001 · ISO 9001 · ITAR registered · Nadcap
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