UNSPSC
Global product/service classification for procurement and supply chain management.
Get right NAICS code(s) for your business
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NAICS Business Classification System
NAICS vs SIC Comparison
Key differences from the older Standard Industrial Classification:
- • 6-digit codes vs 4-digit SIC codes
- • Service sector emphasis (vs manufacturing focus)
- • North American trilateral cooperation (US/Canada/Mexico)
- • Updated every 5 years (vs SIC 1987 final update)
- • Better alignment with modern economy
Government Contracting
NAICS codes are essential for:
- • Federal contract opportunities (SAM.gov)
- • Small business size standards determination
- • SBA certification programs (8(a), HUBZone, etc)
- • Statistical reporting and tax purposes
- • Industry benchmarking and analysis
Code Structure & Hierarchy
NAICS uses a hierarchical structure from 2-digit sectors to 6-digit national industries. The 2022 revision includes 1170 industries across 20 sectors, updated every 5 years to reflect economic changes.
ETIM
Technical product classification for electrical and building technology sectors.
ISIC
UN global standard for economic activity classification and international statistics.
HS
Harmonized System codes for international trade and customs classification.
HTS
Harmonized Tariff Schedule codes for US imports and customs classification.
CN
EU Combined Nomenclature for customs and trade within the European Union.
NACE
EU statistical classification of economic activities for business statistics.
CPV
Common Procurement Vocabulary for EU public procurement and tenders.
NSN
NATO Stock Number classification for defense and military logistics.