govchime
Federal
My Workspace
Saved Searches
Favorites
Opportunities
Active Opportunities
Award Notices
Archived
Market Intelligence
Contract Awards
Vendor Profiles
Agency Profiles
Analytics
Leaderboards
Spending Trends
Set-Aside Performance
Resources
Glossary
FAQs
Blog
govchime
govchime

Data sourced from SAM.gov, USAspending.gov, and public resources. No warranties or guarantees.

Product

OpportunitiesVendorsAgenciesAnalytics

Resources

GlossaryFAQsSAM.gov

Company

AboutContactBlog

Legal

Privacy PolicyTerms of Service

© 2025 GovChime. All rights reserved.

SitemapAccessibilitySecurity
Legal Name
UEI
CAGE Code
HQ City/State
HQ Country
Primary NAICS
Obligated (All)
FY Obligated
Contracts
Status
Website
  1. Home
  2. /
  3. Vendors
  4. /NAICS 56

Top federal contractors in NAICS 56

Every contractor below has declared NAICS 56 in SAM.gov. Values reflect cumulative obligations reported to FPDS.

Federal contractors classified under NAICS 56. Ranked by total obligated contract value from FPDS-NG and USAspending.gov.

61,980 contractorsOpen full filtered list

Top federal contractors

  1. #1
    TRIAD NATIONAL SECURITY, LLC
    COLUMBUS, OH
    NAICS 561210
    UEI X7WUS5LRBQU3
  2. #2
    SAVANNAH RIVER NUCLEAR SOLUTIONS LLC
    AIKEN, SC
    NAICS 561210
    UEI XLQ7CKUSQSD5
  3. #3
    VECTRUS SYSTEMS LLC
    COLORADO SPRINGS, CO
    NAICS 561210
    UEI RRFJZGASZJ41
  4. #4
    Honeywell Federal Manufacturing & Technologies, LLC
    KANSAS CITY, MO
    NAICS 561210
    UEI DMEGBYTVBQS5
  5. #5
    MISSION SUPPORT & TEST SERVICES LLC
    NORTH LAS VEGAS, NV
    NAICS 561210
    UEI YSYZHPCG4XB3
  6. #6
    CORECIVIC, INC.
    BRENTWOOD, TN
    NAICS 561210
    UEI HJGMJN1JKL46
  7. #7
    HANFORD MISSION INTEGRATION SOLUTIONS, LLC
    RICHLAND, WA
    NAICS 561210
    UEI X2KSLTU1CM33
  8. #8
    FLUOR-BWXT PORTSMOUTH LLC
    PIKETON, OH
    NAICS 561210
    UEI NG33LHHLGG15
  9. #9
    UCOR LLC
    OAK RIDGE, TN
    NAICS 562910
    UEI QHN6R6M114L7
  10. #10
    PANTEXAS DETERRENCE, LLC
    LYNCHBURG, VA
    NAICS 561210
    UEI SPG7J8395CJ5
  11. #11
    SALADO ISOLATION MINING CONTRACTORS, LLC
    RESTON, VA
    NAICS 562211
    UEI MHKNRXGKKTS6
  12. #12
    PAE APPLIED TECHNOLOGIES LLC
    CHANTILLY, VA
    NAICS 561210
    UEI K55GHE7FCEF5
  13. #13
    NEWPORT NEWS NUCLEAR BWXT-LOS ALAMOS LLC
    LOS ALAMOS, NM
    NAICS 562910
    UEI G6XGNM6YH9D4
  14. #14
    IDAHO ENVIRONMENTAL COALITION LLC
    TULLAHOMA, TN
    NAICS 562910
    UEI LQ5ZLNE3EM27
  15. #15
    LOCKHEED MARTIN CORPORATION
    LEXINGTON, KY
    NAICS 561990
    UEI JKVWEPKJRR65
  16. #16
    SAVANNAH RIVER MISSION COMPLETION, LLC
    AIKEN, SC
    NAICS 562910
    UEI C32KCWJ94LY8
  17. #17
    FOUR RIVERS NUCLEAR PARTNERSHIP LLC
    KEVIL, KY
    NAICS 562910
    UEI H1HWLSEDDKQ8
  18. #18
    XATOR LLC
    MANASSAS, VA
    NAICS 561621
    UEI ZJFDNMA46LT9
  19. #19
    UNITED CLEANUP OAK RIDGE LLC
    OAK RIDGE, TN
    NAICS 562910
    UEI CM39N6XPQF41
  20. #20
    FLUOR FEDERAL PETROLEUM OPERATIONS, LLC
    NEW ORLEANS, LA
    NAICS 561210
    UEI KJDUB6XQDTN4
  21. #21
    PARAGON SYSTEMS INC
    HERNDON, VA
    NAICS 561612
    UEI RG1VD6RNMXB5
  22. #22
    FLUOR INTERCONTINENTAL, INC
    GREENVILLE, SC
    NAICS 561210
    UEI XMJWLE5WFT29
  23. #23
    TRIPLE CANOPY INC
    HERNDON, VA
    NAICS 561612
    UEI F481BZWYCZA7
  24. #24
    HANFORD TANK WASTE OPERATIONS & CLOSURE, LLC
    LYNCHBURG, VA
    NAICS 562211
    UEI S3NQNFD3YS43
  25. #25
    SALLYPORT GLOBAL HOLDINGS INC
    RESTON, VA
    NAICS 561612
    UEI CJV9TZ1GS425
  26. #26
    J & J MAINTENANCE INC
    MCLEAN, VA
    NAICS 561210
    UEI Y4TKSMDNTRN6
  27. #27
    AKIMA FACILITIES OPERATIONS LLC
    HERNDON, VA
    NAICS 561210
    UEI K218AKKG7SH6
  28. #28
    SYNCOM SPACE SERVICES LLC
    CHANTILLY, VA
    NAICS 561210
    UEI GM2QNEGF7CA3
  29. #29
    Covenant Aviation Security, LLC
    NAPERVILLE, IL
    NAICS 561612
    UEI C8GANE5B4W83
  30. #30
    AMENTUM PARSONS LOGISTICS SERVICES LLC
    CHANTILLY, VA
    NAICS 561210
    UEI PW8NMYB8WLP5
See all 61,980 contractors