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Small business government contractors

Profiles of small businesses registered on SAM.gov to win federal contracts: CAGE code, UEI, registration status, SBA certifications and federal contract history. 34,768 of them have won federal contracts or SBIR/STTR awards in the last few years.

Or list small businesses by state, NAICS code or certification

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Small businesses in Oklahoma, with primary NAICS code 238220 (Plumbing, Heating, and Air-Conditioning Contractors), by federal contract dollars

Ranked by federal prime contract dollars as a small business since FY2024 (USAspending.gov, as of Nov 5, 2026).

How these are ranked

Prime contract dollars since fiscal year 2024 on contracts where USAspending.gov counts the firm as a small business. “Small” is set per NAICS code: these firms are registered small under their primary code (or SBA-certified). Firms that hold small business subcontracting plans, which only businesses that aren't small file, or have $1 billion or more in these contracts are left out. A profile's yearly totals count all of its prime contracts, so they can be higher.

  1. Cherokee Nation Mechanical LLCTulsa, OK · $16.3 million8(a)
  2. Metropolitan Air Conditioning Service CoOklahoma City, OK · $7.7 million
  3. Trade Mechanical Contractors IncOklahoma City, OK · $2.4 million
  4. Lieber Mechanical LLCYukon, OK · $2.4 million
  5. Jackson Mechanical Service IncOklahoma City, OK · $1.9 million
  6. Luther Industries LLCBlanchard, OK · $1.7 million
  7. Hunter Mechanical & Controls, Inc.Oklahoma City, OK · $561,035
  8. Ready Services, LLCTulsa, OK · $497,4778(a)HUBZoneSDVOSB
  9. Linn's Plumbing LLCChandler, OK · $461,577SDVOSB
  10. Northwest Plumbing & Mechanical IncEnid, OK · $398,281
  11. Apex Medical Gas Systems IncOklahoma City, OK · $140,602
  12. Zion Services LLCOklahoma City, OK · $65,000WOSB
  13. W & R Mechanical LLCCyril, OK · $37,500WOSB
  14. Service Wizards, LLCTulsa, OK · $19,537
  15. Coday Contracting, LLCBristow, OK · $17,221
Top firms by certification in Oklahoma, with primary NAICS code 238220 (Plumbing, Heating, and Air-Conditioning Contractors) (8(a), HUBZone, WOSB and SDVOSB)

Top 8(a) firms in Oklahoma, with primary NAICS code 238220 (Plumbing, Heating, and Air-Conditioning Contractors)

  1. Cherokee Nation Mechanical LLCTulsa, OK · $16.3 million
  2. Ready Services, LLCTulsa, OK · $497,477

Top HUBZone firms in Oklahoma, with primary NAICS code 238220 (Plumbing, Heating, and Air-Conditioning Contractors)

  1. Ready Services, LLCTulsa, OK · $497,477

Top Women-owned small businesses in Oklahoma, with primary NAICS code 238220 (Plumbing, Heating, and Air-Conditioning Contractors)

  1. Zion Services LLCOklahoma City, OK · $65,000
  2. W & R Mechanical LLCCyril, OK · $37,500

Top Service-disabled veteran-owned in Oklahoma, with primary NAICS code 238220 (Plumbing, Heating, and Air-Conditioning Contractors)

  1. Ready Services, LLCTulsa, OK · $497,477
  2. Linn's Plumbing LLCChandler, OK · $461,577

Hiring small subcontractors?

If you're a prime looking for small businesses to team with, use the filters above to list small firms by state, NAICS code and certification, then open a profile for its SAM.gov registration, the codes it is small under and its contract history. Check any firm by name, UEI or CAGE code with the CAGE code and UEI lookup.

About these profiles

Every business registered on SAM.gov as small under at least one NAICS code, and every SBA-certified firm, has a profile; each profile says which codes it is small under. Registration details come from SAM.gov's public entity extract and contract figures from USAspending.gov. Contact names and street addresses are left out. Looking for partners to team with? See how to become a government subcontractor.

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