Company lists · Data refreshed November 2026

Top 25 Interlocking systems providers based in the United States

RevenueBase identified 438 company matches for interlocking systems providers associated with the United States as of November 2026 and tracks 9,023 professional contacts across them, including 3,599 with verified work emails. New York is the largest hub.

This list covers company matches for interlocking systems providers 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
438Companies
9,023Contacts tracked
3,599Verified emails
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The 25 largest interlocking systems providers based in the United States

Ranked by team size
Top 25 of 438 company matches for interlocking systems providers 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 matchNew York, NY, United StatesHQ recorded Nov 6, 20261,001-5,000756 contacts →

Exact match

“RailWorks builds and maintains rail transportation infrastructure that keeps people and goods moving across the United States and Canada.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchOrange, NJ, United StatesHQ recorded Nov 6, 202651-200258 contacts →

Exact match

“One of the largest privately held national electronic security system integrator in the USA, NAVCO keeps you one step ahead of ever-changing technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchExton, PA, United StatesHQ recorded Nov 6, 2026201-500212 contacts →

Exact match

“NextGen Security is a security systems integrator that offers industrial companies best in class industry knowledge, engineering design, implementation, management and on-going…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSalt Lake City, CA, United StatesHQ recorded Nov 6, 2026201-500210 contacts →

Exact match

“Stone Security has been driving the implementation of network-based surveillance, access control and intrusion systems for over 15 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAtlanta, United StatesHQ recorded Nov 6, 20265,001-10,000172 contacts →

Exact match

“Electronic Security Integrator Access Control Closed Circuit Television Intercom”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchNicholasville, KY, United StatesHQ recorded Nov 6, 202651-200135 contacts →

Exact match

“At LockNet, we are all about doors and locks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchFort Worth, TX, United StatesHQ recorded Nov 6, 20261,001-5,000122 contacts →

Exact match

“American Track is America's largest and most trusted rail solutions provider of turnkey rail solutions, offering railroad design engineering, maintenance, construction, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLenexa, GA, United StatesHQ recorded Nov 6, 2026201-500114 contacts →

Exact match

“Over the past 30 years, American Direct has grown from being one of the nation’s leading doors, frames and hardware providers to also owning an access software platform and has…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLittleton, CO, United StatesHQ recorded Nov 6, 202651-200113 contacts →

Exact match

“Modern Railway Systems is committed to provide each of our customers with the most innovative, cost-effective and safest systems available.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNashville-davidson, TN, United StatesHQ recorded Nov 6, 2026201-500111 contacts →

Exact match

“Guardian Access Solutions was founded in 1987 with a focus on automated gates and parking and parking revenue control systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchQuincy, MA, United StatesHQ recorded Nov 6, 202651-200105 contacts →

Exact match

“The Flying Locksmiths Inc, is an all-inclusive security provider, who are quickly becoming the largest National Commercial Locksmith.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMooresville, NC, United StatesHQ recorded Nov 6, 202611-5097 contacts →

Exact match

“Access Control Technologies (ACT) has decades of expertise manufacturing, installing and maintaining gates.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchKennett Square, CO, United StatesHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“PSX is a family-owned and operated small business providing parking and security systems integration solutions across most markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRipon, WI, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLafayette, IN, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Since 1876, Mulhaupt's has been involved in the design, supply, installation, monitoring, and support of building material and electronic systems for access and security.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWoburn, MA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchYorba Linda, AZ, United StatesHQ recorded Nov 6, 202651-20068 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMiami, SC, United StatesHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“Integrated Security Systems is a full service systems integrator specializing in Access Control, Life Safety, Fire Alarm, CCTV and Mass Notification Systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchDes Plaines, IL, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“Anderson Lock Company was founded with a vision for providing security solutions for commercial, industrial and institutional facilities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPenn, PA, United StatesHQ recorded Nov 6, 202611-5063 contacts →

Exact match

“Rail Transit Consultants, Inc.(RTC) was incorporated in January of 1986 as a corporation of the state of Pennsylvania.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“RAE Security is a customer centric Security business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchAnaheim, CA, United StatesHQ recorded Nov 6, 202651-20059 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 2026201-50056 contacts →

Exact match

“Carter Brothers was founded in by 2013 NFL Hall of Fame Inductee, Chairman, Cris Carter and his brother, John F.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMinnetonka, MN, United StatesHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“Pro-Tec Design is a purpose driven Twin Cities security integrator, providing consulting, design and installation of Video Surveillance, Card Access Control, Intercom and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLapeer, MI, United StatesHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Professional Software Associates, Inc.”

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

Showing 25 of 438 interlocking systems providers based in the United States

See the full list, filter by size, metro and specialty, and access 3,599 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Interlocking systems providers based in the United States at a glance

As of Nov 6, 2026
39.9%Verified-email coverage
20.6Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
164
11-50
199
51-200
57
201-500
10
501-1,000
3
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 438 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 “interlocking systems providers” 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 3,599 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 “interlocking systems providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many interlocking systems providers are there based in the United States?

RevenueBase identified 438 company matches for interlocking systems providers 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?

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

Which city has the most interlocking systems providers?

New York leads with 9 company records, followed by Dallas (6) and Atlanta (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 3,599 professional contacts with verified work emails tracked across these 438 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.