NAICS··4 min read
How to Find Your NAICS Code for Federal Contracting
How to find and choose the right NAICS code for federal contracting, what NAICS codes mean, how they set SBA size standards, and how to add them to SAM.gov.
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Registration
7 articles
SAM.gov··4 min read
How to Get a UEI Number Free Through SAM.gov
How to get a UEI number for free: create a Login.gov account, start entity registration on SAM.gov, pass entity validation, and your Unique Entity ID is assigned.
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SAM.gov··4 min read
UEI Number Format: What a Valid Unique Entity ID Looks Like
The UEI number format explained: 12 alphanumeric characters, no O or I, never starting with zero. See valid UEI examples and how to validate one.
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SAM.gov··4 min read
UEI Number Lookup: How to Find a Unique Entity ID
How to look up any organization's UEI (Unique Entity ID) free on SAM.gov, find your own UEI, and search by company name, CAGE code, or former DUNS number.
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SAM.gov··4 min read
What Does UEI Stand For? Unique Entity ID Meaning
UEI stands for Unique Entity ID — the 12-character government-issued identifier that replaced DUNS for every federal contractor and grant applicant. Here's what it means.
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SAM.gov··7 min read
How to Register on SAM.gov: Complete 2026 Guide
Step-by-step SAM.gov registration walkthrough for new federal contractors. Entity validation, UEI, CAGE, NAICS selection, assertions, reps and certs — and the most common rejection fixes.
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SAM.gov··6 min read
Unique Entity ID (UEI) Explained: What Replaced DUNS
What the Unique Entity ID (UEI) is, how it replaced DUNS in April 2022, how to find or get one, and how it interacts with your CAGE code, TIN, and SAM.gov registration.
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