Practical, current guidance built on real SAM.gov data — written for small businesses that want to win federal work.
Start Free 7-Day TrialNAICS (North American Industry Classification System) groups businesses into 6-digit industry codes. Federal buyers tag every solicitation with the NAICS codes the work falls under — for example 541511 for custom computer programming, 561720 for janitorial services, 236220 for commercial construction.
The Census Bureau runs a free NAICS search at census.gov/naics. In practice, match the code to your actual services: what do you invoice for, and what does the agency buying that service search under? Your SAM.gov registration lets you list the NAICS codes you serve.
One wrong code and you never see the opportunities you are eligible for; one right code and every matching posting can reach you. That is exactly what GovContract Radar filters on — see live opportunities for codes like 541511, 561720 and 811310 at https://pixharvest.com/gov/naics/541511
Live opportunity pages for this industry:
Free 7-day trial · No card required · Daily email digest of new opportunities matching your NAICS and set-asides.
Start Free Trial Prefer invoice? Pay by bank transfer