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NAICS 561621 and PSC N059 contractors

Security Systems Services (except Locksmiths). INSTALLATION OF EQUIPMENT- ELECTRICAL AND ELECTRONIC EQUIPMENT COMPONENTS. Cross-code contractor overlap.

NAICS 561621 + PSC N059

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$4,115,588,356

State overlap

Top recipients

Visible recipients in the NAICS 561621 and PSC N059 overlap

M. C. Dean, Inc.

Tysons, VA

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

$1,080,736,298

Johnson Controls Building Automation Systems, LLC

Huntsville, AL

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

$2,200,109,611

Siemens Government Technologies INC

Arlington, VA

Arlington, VA | 227 awards | Top agency Department of Defense | NAICS 541512

$771,223,377

Olgoonik Solutions LLC

Anchorage, AK

Anchorage, AK | 77 awards | Top agency Department of State | NAICS 541690

$63,519,070

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