Company lists · Data refreshed November 2026

Top 25 Sub-assembly manufacturers based in the United States

RevenueBase identified 1,144 company matches for sub-assembly manufacturers associated with the United States as of November 2026 and tracks 26,499 professional contacts across them, including 6,019 with verified work emails. San Jose is the largest hub.

This list covers company matches for sub-assembly manufacturers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,144Companies
26,499Contacts tracked
6,019Verified emails
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The 25 largest sub-assembly manufacturers based in the United States

Ranked by team size
Top 25 of 1,144 company matches for sub-assembly manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMayville, WI, United StatesHQ recorded Nov 6, 20261,001-5,000979 contacts →

Exact match

“We are more than just a manufacturing and fabricating company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchSpokane Valley, AR, United StatesHQ recorded Nov 6, 20261,001-5,000883 contacts →

Exact match

“Keytronic is a value-added contract manufacturer to some of the world’s leading OEMs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchGrand Rapids, MI, United StatesHQ recorded Nov 6, 20261,001-5,000509 contacts →

Exact match

“As a global supplier of precision engineered assemblies, we design, engineer and manufacture things that move.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchWestford, FL, United StatesHQ recorded Nov 6, 20261,001-5,000442 contacts →

Exact match

“Mack Technologies is a leading supplier of printed circuit board assembly, systems assembly, and electronics contract manufacturing services for the defense, communications…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLadson, SC, United StatesHQ recorded Nov 6, 2026501-1,000385 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchVestavia Hills, NC, United StatesHQ recorded Nov 6, 20261,001-5,000361 contacts →

Exact match

“O’Neal Manufacturing Services (OMS) is a supplier of fabricated metal components and welded assemblies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLincolnshire, IL, United StatesHQ recorded Nov 6, 20261,001-5,000359 contacts →

Exact match

“Kauffman Engineering is a privately held, American company and well established since its beginning in 1973.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWestfield, NY, United StatesHQ recorded Nov 6, 2026501-1,000315 contacts →

Exact match

“We Make Powerful Connections.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchCharlotte, NC, United StatesHQ recorded Nov 6, 20261,001-5,000283 contacts →

Exact match

“MW Components is focused on accelerating the entire process of delivering custom, stock, and standard parts to virtually any volume and against demanding deadlines.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBloomington, IN, United StatesHQ recorded Nov 6, 2026201-500265 contacts →

Exact match

“TASUS Corporation is a Tier One supplier to Toyota Motor Manufacturing North America and a Tier Two supplier to OEM automotive and transportation markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWoodinville, TX, United StatesHQ recorded Nov 6, 2026501-1,000261 contacts →

Exact match

“NIC Global is a single-source manufacturer providing turn-key mechanical and electromechanical assembly, expert sheet metal fabrication, and global sourcing of metal and plastic…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCabot, PA, United StatesHQ recorded Nov 6, 2026501-1,000260 contacts →

Exact match

“Penn United provides MANUFACTURING SOLUTIONS for customers needing precision components or precision-assembled products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMount Pleasant, PA, United StatesHQ recorded Nov 6, 2026201-500251 contacts →

Exact match

“Full-service manufacturer.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMorton, IL, United StatesHQ recorded Nov 6, 2026501-1,000249 contacts →

Exact match

“Morton Industries is a leading manufacturer of Fabricated Tube and Sheet Metal Assemblies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 2026201-500238 contacts →

Exact match

“Established in 1946, Major Tool & Machine started business as a custom job shop specializing in the production of tooling and aircraft ground support equipment and has since…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchElk Grove Village, IL, United StatesHQ recorded Nov 6, 202610001+206 contacts →

Exact match

“Hi-P is a well known global contract manufacturer who specializes in complex electromechanical components.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchElk Grove Village, IL, United StatesHQ recorded Nov 6, 202651-200187 contacts →

Exact match

“Acme Industries is a full-service, contract manufacturing company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchRochester, NY, United StatesHQ recorded Nov 6, 2026201-500184 contacts →

Exact match

“PEKO is a leading contract manufacturer providing full-service, end-to-end manufacturing of large-scale machinery, complex equipment, and major electro-mechanical assemblies for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchDetroit, MI, United StatesHQ recorded Nov 6, 2026201-500177 contacts →

Exact match

“LM Manufacturing provides manufacturing, assembly, sequencing, supply chain and logistics management for complete seat assemblies and other value-added modular assemblies for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSeneca, PA, United StatesHQ recorded Nov 6, 2026201-500174 contacts →

Exact match

“Matric Group is a contract manufacturer of electronic assemblies, offering world-class Electronic Manufacturing Services (EMS) with personalized customer support, working closely…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500172 contacts →

Exact match

“UPG is a US based Original Design Manufacturer (ODM), contract manufacturer, and plastics injection molder.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchMonticello, MN, United StatesHQ recorded Nov 6, 2026501-1,000168 contacts →

Exact match

“Standard Iron houses all the metalworking equipment needed to fabricate everything from simple parts to complex machined weldments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBlaine, MN, United StatesHQ recorded Nov 6, 2026201-500168 contacts →

Exact match

“Chandler aims to be the supplier of choice for those customers within the Aerospace, Defense, Industrial, Medical, Electronic Connectors and other markets who are seeking a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWest Columbia, IN, United StatesHQ recorded Nov 6, 20261,001-5,000162 contacts →

Exact match

“Prince Manufacturing is a contract manufacturing company that focuses on eliminating waste in the customer's supply chain by providing fabrication, forming, coating and finishing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchTulsa, OK, United StatesHQ recorded Nov 6, 202651-200158 contacts →

Exact match

“Pryer Aerospace, a leading manufacturer of complex aerospace parts, delivers expert engineering support, precision machining, and structural assemblies for the space, defense, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,144 sub-assembly manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 6,019 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sub-assembly manufacturers based in the United States at a glance

As of Nov 6, 2026
22.7%Verified-email coverage
23.2Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · San Jose
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
263
11-50
437
51-200
335
201-500
70
501-1,000
19
1,001-5,000
17
5,001-10,000
1
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,144 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “sub-assembly manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 6,019 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “sub-assembly manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sub-assembly manufacturers are there based in the United States?

RevenueBase identified 1,144 company matches for sub-assembly manufacturers associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

MEC Mayville Engineering Company, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most sub-assembly manufacturers?

San Jose leads with 16 company records, followed by Rochester (12) and Wichita (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 6,019 professional contacts with verified work emails tracked across these 1,144 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.