Who wins NAICS 561990 federal contracts?
A direct answer for ALL OTHER SUPPORT SERVICES federal contract competitors and buyers.
Direct answer
ISOTEK SYSTEMS, LLC leads NAICS 561990 federal contracts with $887,279,962 in ingested obligations.
Answer Facts
NAICS561990
Obligations$908,092,252
Top contractorISOTEK SYSTEMS, LLC
Top agencyDepartment of Energy
Which agencies buy NAICS 561990?
Department of Energy is the largest visible agency buyer for NAICS 561990 at $887,279,962.
Source: USAspending.gov. Last updated from ingested federal spending data: May 7, 2026.