Company lists · Data refreshed October 2026

Top 25 Interlocking system manufacturers based in the United States

Name: Interlocking system manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 17, 2026 230 companies tracked

RevenueBase identified 230 company matches for interlocking system manufacturers associated with the United States as of October 2026 and tracks 6,089 professional contacts across them, including 2,218 with verified work emails. Houston is the largest hub.

This list covers company matches for interlocking system 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 October 17, 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 Oct 17, 2026 How this list was built

230Companies

6,089Contacts tracked

2,218Verified emails

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The 25 largest interlocking system manufacturers based in the United States

Ranked by team size

Top 25 of 230 company matches for interlocking system manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Allegion US	Exact match	Carmel, IN, United StatesHQ recorded Oct 17, 2026	10001+	1,796 contacts →
	Exact match “Allegion (NYSE: ALLE) is a global pioneer in safety and security, with leading brands like CISA®, Interflex®, LCN®, Schlage® and Von Duprin ®.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
2	Napco Security Technologies	Exact match	Amityville, NY, United StatesHQ recorded Oct 17, 2026	501-1,000	432 contacts →
	Exact match “NAPCO Security Technologies (NASDAQ: NSSC) is one of the world's leading manufacturers of technologically advanced electronic security equipment including intrusion and fire alarm…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
3	4front Engineered Solutions	Exact match	Carrollton, TX, United StatesHQ recorded Oct 17, 2026	1,001-5,000	406 contacts →
	Exact match “4Front Engineered Solutions is a global leader in entrance solutions, providing one of the world’s most comprehensive lines of entrance automation products and warehouse solutions.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
4	Total Security Solutions	Exact match	Fowlerville, MI, United StatesHQ recorded Oct 17, 2026	51-200	187 contacts →
	Exact match “Total Security Solutions was founded in 2004 on the shared belief that everyone deserves protection from physical attacks.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
5	VSR Industries	Exact match	Henderson, NV, United StatesHQ recorded Oct 17, 2026	51-200	162 contacts →
	Exact match “Committed to Quality Since 1969 Established as a lock and security company in 1969, VSR Industries has grown from a simple, two person operation into a full-scale manufacturing…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
6	Eberhard Manufacturing Company	Exact match	Strongsville, OH, United StatesHQ recorded Oct 17, 2026	201-500	116 contacts →
	Exact match “Founded in 1877, Eberhard is a leading global manufacturer of high-performance industrial access hardware, specializing in latches, locks, handles, and electronic access systems.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
7	Guardian Access Solutions	Exact match	Nashville-davidson, TN, United StatesHQ recorded Oct 17, 2026	201-500	105 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 · Oct 17, 2026 · View company records in RevenueBase
8	Access Control Technologies, LLC	Exact match	Mooresville, NC, United StatesHQ recorded Oct 17, 2026	11-50	90 contacts →
	Exact match “Access Control Technologies (ACT) has decades of expertise manufacturing, installing and maintaining gates.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
9	Detex Corporation	Exact match	New Braunfels, TX, United StatesHQ recorded Oct 17, 2026	51-200	76 contacts →
	Exact match “For years, Detex has strived to build products that could be trusted to perform.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
10	Mulhaupts	Exact match	Lafayette, IN, United StatesHQ recorded Oct 17, 2026	51-200	71 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 · Oct 17, 2026 · View company records in RevenueBase
11	Delta Scientific Corporation	Exact match	Newnan, GA, United StatesHQ recorded Oct 17, 2026	51-200	70 contacts →
	Exact match “Delta Scientific Corporation is the world’s leading manufacturer of high-security vehicle barricade systems and bollards since 1974, engineering and producing crash-rated…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
12	Doorking , INC	Exact match	Inglewood, CA, United StatesHQ recorded Oct 17, 2026	51-200	68 contacts →
	Exact match “DoorKing, Inc.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
13	Alvarado	Exact match	Chino, CA, United StatesHQ recorded Oct 17, 2026	51-200	66 contacts →
	Exact match “Founded in 1956, Alvarado is a U.S-based company that specializes in secured entry control, admission systems, queuing and asset protection products.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
14	PDQ Manufacturing	Exact match	Lancaster, PA, United StatesHQ recorded Oct 17, 2026	51-200	63 contacts →
	Exact match “PDQ Manufacturing, established in 1982, is an independent full-service architectural door hardware manufacturer based in Lancaster County, PA.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
15	Kirk KEY Interlock Company LLC	Exact match	North Canton, OH, United StatesHQ recorded Oct 17, 2026	51-200	60 contacts →
	Exact match “Since 1932, Kirk Key has been the pioneering industry leader in interlocks.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
16	Nice Hysecurity	Exact match	Kent, WA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	60 contacts →
	Exact match “HySecurity gate operators meet the most stringent anti-terrorist, governmental, industrial, corporate and residential security and reliability requirements.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
17	Paxton Access US	Exact match	Greenville, SC, United StatesHQ recorded Oct 17, 2026	201-500	50 contacts →
	Exact match “Paxton is the UK designer and manufacturer of market leading IP access control and video intercom systems, with 40 years’ experience.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
18	Spedos Dveřní A Vratové Systémy	Exact match	757 01 Valašské Meziříčí, United StatesHQ recorded Oct 17, 2026	201-500	48 contacts →
	Exact match “SPEDOS automatické dveřní a vratové systém - automatické dveře, turniketové dveře, průmyslová a garážová vrata, rychlonavíjecí vrata, kyvná vrata, pruhové závěsy, vyrovnávací…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
19	Miller Edge, INC	Exact match	West Grove, PA, United StatesHQ recorded Oct 17, 2026	51-200	46 contacts →
	Exact match “Miller Edge is the leading North American manufacturer of UL 325 recognized safety accessories for motorized doors and automated vehicular gate systems.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
20	Autogate, INC	Exact match	Berlin Heights, OH, United StatesHQ recorded Oct 17, 2026	51-200	43 contacts →
	Exact match “AutoGate manufacturs Vertical Pivot Gate (VPG) operators.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
21	Security Door Controls	Exact match	Camarillo, CA, United StatesHQ recorded Oct 17, 2026	51-200	42 contacts →
	Exact match “SECURITY DOOR CONTROLS manufactures electrified access control hardware and controllers worldwide.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
22	Ghost Controls	Exact match	Tallahassee, FL, United StatesHQ recorded Oct 17, 2026	11-50	36 contacts →
	Exact match “Ghost Controls designs and manufacturers automatic gate openers, consumer electronics, and outdoor products with a focus on being first to market with the next generation of…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
23	Cal-Royal Products, INC	Exact match	Commerce, CA, United StatesHQ recorded Oct 17, 2026	51-200	35 contacts →
	Exact match “Cal-Royal is a leading provider of security and access control solutions, offering a diverse range of door hardware and electronic access systems.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
24	Mckinney Door Solutions	Exact match	Colorado Springs, CO, United StatesHQ recorded Oct 17, 2026	11-50	31 contacts →
	Exact match “Trusted since 1967, McKinney Door Solutions delivers premium commercial door systems and cutting-edge security solutions nationwide.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
25	Cite Armored	Exact match	Holly Springs, MS, United StatesHQ recorded Oct 17, 2026	51-200	31 contacts →
	Exact match “Since 2002, CITE Armored has been a world leader in custom security manufacturing.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “interlocking system manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 230 interlocking system manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 2,218 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Interlocking system manufacturers based in the United States at a glance

As of Oct 17, 2026

36.4%Verified-email coverage

26.5Average contacts per company

11-50Median size (employees)

2.2%Largest-city concentration · Houston

Oct 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 230 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 system 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 2,218 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 October 17, 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 system manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many interlocking system manufacturers are there based in the United States?

RevenueBase identified 230 company matches for interlocking system manufacturers associated with the United States as of October 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?

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

Which city has the most interlocking system manufacturers?

Houston leads with 5 company records, followed by Cleveland (3) and Jacksonville (3).

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 2,218 professional contacts with verified work emails tracked across these 230 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 October 17, 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.