Department of Defense NAICS 561621 and PSC 6350 contractors

Security Systems Services (except Locksmiths). MISCELLANEOUS ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS. Cross-code overlap under Department of Defense.

Department of Defense · NAICS 561621 · PSC 6350

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$1,181,277,635

State overlap

Top recipients

Visible recipients in the Department of Defense overlap of NAICS 561621 and PSC 6350

M. C. Dean, Inc.

Tysons, VA

Tysons, VA | 1,299 awards | Top agency Department of Defense | NAICS 541330

$985,668,533

Johnson Controls Building Automation Systems, LLC

Huntsville, AL

Huntsville, AL | 154 awards | Top agency Department of Defense | NAICS 541512

$139,590,015

Chenega Security International, LLC

Chantilly, VA

Chantilly, VA | 28 awards | Top agency Department of Defense | NAICS 561612

$56,019,087

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