NAICS + PSC page

NAICS 561621 and PSC R604 contractors

Security Systems Services (except Locksmiths). SUPPORT- ADMINISTRATIVE: MAILING/DISTRIBUTION. Use this cross-code page to see which visible federal contractors sit in the overlap between these two public category lanes.

NAICS 561621 + PSC R604

Last updated: April 3, 2026

Visible recipients

Mapped obligations

$584,472,940

State overlap

Top recipients

Visible recipients in the NAICS 561621 and PSC R604 overlap

Siemens Government Technologies INC

Arlington, VA

Siemens Government Technologies INC is a federal category business profile based in Arlington, VA. The current public data layer shows $111,989,171 in visible federal obligations across 227 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541512 (Computer Systems Design Services). The profile also shows meaningful product and service activity in PSC N059.

$584,472,940