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TeamingIndex

NAICS 561621 · Administrative and Support and Waste Management and Remediation Services

Security Systems Services (except Locksmiths)

10,151 active contractors list NAICS 561621 (Security Systems Services (except Locksmiths)) in SAM.gov; 7,275 are small under its SBA size standard and 1,740 list it as their primary NAICS.

Learn more about NAICS size standards

Active contractors
10,151
Small under 561621SBA size standard for this code
7,275
Primary NAICSTheir main line of business
1,740
Hidden registrationsExcluded, expired or inactive
74

Work this industry

Size is NAICS-specific: a firm can be small under one code and other than small under another. Learn more about small business set-asides

Contractors listing NAICS 561621

Claimed profiles come first by membership level, then companies with 561621 as their primary NAICS, then federal obligations over the last 36 months. SPRS shows the highest blind bracket met, never the score. Learn more about blind SPRS brackets

74 registrations hidden because they are excluded, expired or inactive in SAM.gov. Include them

Showing 1–20 of 10,151 contractors

Codes these contractors list most often alongside 561621: natural teaming adjacencies.