Company lists · Data refreshed November 2026

Top 25 Custom assembly services based in the United States

RevenueBase identified 460 company matches for custom assembly services associated with the United States as of November 2026 and tracks 7,393 professional contacts across them, including 1,717 with verified work emails. San Jose is the largest hub.

This list covers company matches for custom assembly services 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
460Companies
7,393Contacts tracked
1,717Verified emails
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The 25 largest custom assembly services based in the United States

Ranked by team size
Top 25 of 460 company matches for custom assembly services 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 matchChattanooga, TN, United StatesHQ recorded Nov 6, 20261,001-5,000391 contacts →

Exact match

“Assemblers, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact 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
3Exact matchSt. Louis, MO, United StatesHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“For thirty years we’ve been in the business of building consumer spaces.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact 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
5Exact matchSussex, WI, United StatesHQ recorded Nov 6, 2026201-500125 contacts →

Exact match

“An accomplished custom injection molder and automated assembly company with more than four decades of proven success.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchCorry, PA, United StatesHQ recorded Nov 6, 202651-200114 contacts →

Exact match

“Viking Plastics is a leading injection molding and value-added assembly service provider, delivering innovative products including sealing solutions, custom injection molding…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchZeeland, MI, United StatesHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“Extol is a manufacturing technology company that improves the way plastic products are made.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBrazil, IN, United StatesHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“PDF, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSpring Lake, MI, United StatesHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“From single components and OEM parts and subassemblies to complete manufacturing and engineering capabilities and services, ACEMCO Incorporated is result-oriented, experienced and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAlbert Lea, MN, United StatesHQ recorded Nov 6, 2026201-50092 contacts →

Exact match

“A premiere supply chain provider, Lou-Rich offers contract manufacturing services specializing in complex metal fabrication, precision machining and assembly.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMinnetonka, MN, United StatesHQ recorded Nov 6, 2026201-50084 contacts →

Exact match

“MultiSource Manufacturing LLC, is a customer-focused contract manufacturer that provides high quality and affordable engineering and fabrication services for the aerospace…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchReno, NV, United StatesHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“Proudly American-based, we work with companies stateside and across the globe, manufacturing their precise products with our state-of-the-art equipment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchAttleboro Falls, MA, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“DISTRON CORPORATION is a New England based provider of electronic contract manufacturing services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMilton, WI, United StatesHQ recorded Nov 6, 2026201-50071 contacts →

Exact match

“KANDU Production Services: Quality Solutions with a Mission At KANDU Industries, we help manufacturers solve real-world production challenges, and make a lasting impact in the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchJoplin, MO, United StatesHQ recorded Nov 6, 2026201-50067 contacts →

Exact match

“Established in 1954 and headquartered in Joplin, Missouri, Able Manufacturing & Assembly, LLC, is a full-service supplier specializing in light metal fabrication and welding…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSpokane Valley, WA, United StatesHQ recorded Nov 6, 2026201-50065 contacts →

Exact match

“Servatron is a highly experienced, full-range provider of custom and contract manufacturing services to the electronics industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSouth Paris, ME, United StatesHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“Maine Machine Products Company is a squ.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchRochester, NY, United StatesHQ recorded Nov 6, 2026201-50063 contacts →

Exact match

“ISO 9001:2015 Registered ISO/ITAR & TS 16949 Compliant AS9100 – Supported by our Quality Systems Manual NAICS 332116,332312,332710,541330,541490 ISO 14001 – Pursuing registration…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSterling Heights, MI, United StatesHQ recorded Nov 6, 202611-5058 contacts →

Exact match

“At H.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSan Antonio, TX, United StatesHQ recorded Nov 6, 2026201-50057 contacts →

Exact match

“Forma brings together the ideal combination of manufacturing and assembly experience, human resource expertise, and continuous improvement culture.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchRiverside, CA, United StatesHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“Contract manufacturer and engineering service provider offering customized solutions through value-added services for electromechanical and mechanical components and assemblies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPewaukee, WI, United StatesHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“PM Plastics is a Wisconsin-based custom injection molding and manufacturing partner supporting OEM products and retail merchandising programs from concept through production.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMarshfield, KS, United StatesHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“ONE-SOURCE SOLUTION FOR ASSEMBLIES.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchTopeka, KS, United StatesHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“Although IMI Industrial was founded on providing millwright services, we have grown to encompass a full-circle approach to the manufacturing industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSaginaw, MI, United StatesHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“At CIGNYS, we want to help you maximize your bottom line.”

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

Showing 25 of 460 custom assembly services based in the United States

See the full list, filter by size, metro and specialty, and access 1,717 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom assembly services based in the United States at a glance

As of Nov 6, 2026
23.2%Verified-email coverage
16.1Average contacts per company
11-50Median size (employees)
1.7%Largest-city concentration · San Jose
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
141
11-50
169
51-200
119
201-500
23
501-1,000
2
1,001-5,000
4
5,001-10,000
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 460 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 assembly services” 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 1,717 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 “custom assembly services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom assembly services are there based in the United States?

RevenueBase identified 460 company matches for custom assembly services 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?

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

Which city has the most custom assembly services?

San Jose leads with 8 company records, followed by Irvine (6) and Grand Rapids (5).

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 1,717 professional contacts with verified work emails tracked across these 460 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.