Company lists · Data refreshed September 2026

Top 25 Custom part manufacturers based in the United States

RevenueBase identified 4,148 company matches for custom part manufacturers associated with the United States as of September 2026 and tracks 41,249 professional contacts across them, including 11,127 with verified work emails. Houston is the largest hub.

This list covers company matches for custom part 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 September 16, 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 Sep 16, 2026 How this list was built
4,148Companies
41,249Contacts tracked
11,127Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest custom part manufacturers based in the United States

Ranked by team size
Top 25 of 4,148 company matches for custom part manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 matchSedro-woolley, WA, United StatesHQ recorded Sep 16, 20261,001-5,000914 contacts →

Exact match

“Janicki is a privately-owned engineering and manufacturing company with locations in Washington and Utah.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchMayville, WI, United StatesHQ recorded Sep 16, 20261,001-5,000906 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchStoughton, WI, United StatesHQ recorded Sep 16, 20261,001-5,000879 contacts →

Exact match

“Nelson Global designs, manufactures, and distributes custom solutions for customers across crucial industries worldwide.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchArlington, VT, United StatesHQ recorded Sep 16, 20261,001-5,000453 contacts →

Exact match

“Mack Molding Co, headquartered in Arlington, VT, provides design through FDA-approved manufacturing services to the medical, commercial, computer & business equipment, energy and…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchOgden, UT, United StatesHQ recorded Sep 16, 2026501-1,000316 contacts →

Exact match

“Founded in 1961 and incorporated in Utah in 1980, Petersen Inc.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6Exact matchCharlotte, NC, United StatesHQ recorded Sep 16, 20261,001-5,000293 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 · Sep 16, 2026 · View company records in RevenueBase
7Exact matchEverett, WA, United StatesHQ recorded Sep 16, 2026501-1,000276 contacts →

Exact match

“For 75+ years Vaupell has been providing global precision components and assemblies to top-tier OEMs, leading growth companies, and start-ups for the aerospace, medical, and the…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchTualatin, OR, United StatesHQ recorded Sep 16, 2026201-500272 contacts →

Exact match

“Ascentec Engineering was founded in 2001 by a team of process and manufacturing engineers all with a solid background in electronics manufacturing processes.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchCabot, PA, United StatesHQ recorded Sep 16, 2026501-1,000254 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchIndianapolis, IN, United StatesHQ recorded Sep 16, 2026201-500233 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 · Sep 16, 2026 · View company records in RevenueBase
11Exact matchMorton, IL, United StatesHQ recorded Sep 16, 2026501-1,000227 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchBloomfield Hills, MI, United StatesHQ recorded Sep 16, 2026501-1,000209 contacts →

Exact match

“American Manufacturing, Serving the World We are driven by precision.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchHartland, WI, United StatesHQ recorded Sep 16, 2026501-1,000188 contacts →

Exact match

“Contract Manufacturing, Designed Around You Fathom Manufacturing helps companies simplify part sourcing with 25+ advanced manufacturing technologies and support services, all…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchWhitsett, NC, United StatesHQ recorded Sep 16, 202651-200187 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchSeattle, WA, United StatesHQ recorded Sep 16, 2026201-500182 contacts →

Exact match

“Custom Prototypes, 3D Printing, and On-Demand Parts Manufacturing.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16Exact matchRaleigh, NC, United StatesHQ recorded Sep 16, 2026n/a157 contacts →

Exact match

“Mecha specializes in the design, analysis, and manufacturing of metal products for the embedded computer industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchSouth Bend, IN, United StatesHQ recorded Sep 16, 2026201-500154 contacts →

Exact match

“General Stamping & Metalworks (GSM) is a leading provider of manufacturing solutions to progressive OEMs worldwide.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchFindlay, OH, United StatesHQ recorded Sep 16, 202651-200153 contacts →

Exact match

“FMT is your strategic partner in high-quality plastic parts manufacturing.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchRockland, MA, United StatesHQ recorded Sep 16, 202651-200152 contacts →

Exact match

“Polymer Corporation manufactures close-tolerance plastic parts and assemblies for blue-chip customers with demanding applications worldwide.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchMadison, CT, United StatesHQ recorded Sep 16, 2026n/a152 contacts →

Exact match

“Since it was founded in 1979, Welding Works has become known for its ability to provide quick, reliable turnaround on all types of industrial metal fabrications.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21Exact matchMinneapolis, MN, United StatesHQ recorded Sep 16, 202651-200144 contacts →

Exact match

“Your Advanced Manufacturing Partner.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchWilmington, MA, United StatesHQ recorded Sep 16, 202651-200127 contacts →

Exact match

“Seurat is an American-born and built 3D-printed metal parts contract manufacturer.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23Exact matchFremont, CA, United StatesHQ recorded Sep 16, 202651-200123 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchUrbandale, IA, United StatesHQ recorded Sep 16, 2026501-1,000123 contacts →

Exact match

“Quality Manufacturing Corp is a Industrial Machinery Manufacturing Company based out of 4300 Nw Urbandale Dr, Urbandale, IA, United States.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchClinton Township, MI, United StatesHQ recorded Sep 16, 202651-200119 contacts →

Exact match

“CPS is an ISO certified manufacturer of prototype and limited production parts and tooling for a variety of industries.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 4,148 custom part manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 11,127 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Custom part manufacturers based in the United States at a glance

As of Sep 16, 2026
27.0%Verified-email coverage
9.9Average contacts per company
11-50Median size (employees)
1.3%Largest-city concentration · Houston
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
1,917
11-50
1,535
51-200
583
201-500
62
501-1,000
21
1,001-5,000
13
5,001-10,000
2
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 4,148 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 “custom part 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 11,127 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 September 16, 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 “custom part manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom part manufacturers are there based in the United States?

RevenueBase identified 4,148 company matches for custom part manufacturers associated with the United States as of September 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?

Janicki tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most custom part manufacturers?

Houston leads with 52 company records, followed by New York (36) and San Jose (33).

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 11,127 professional contacts with verified work emails tracked across these 4,148 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 September 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,148 custom part manufacturers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.