NAICS 333515

Overview

The North American Industry Classification System (NAICS) is the federal standard for classifying business establishments so statistical agencies can collect, analyze, and publish data on the U.S. economy. Developed jointly by the United States, Canada, and Mexico, it replaced SIC in 1997 and is updated on a five-year cycle; the most recent vintage is 2022. ¹

333515 covers establishments primarily engaged in manufacturing accessories and attachments for metal-cutting and metal-forming machine tools. Official examples include knives and bits for lathes, planers, and shapers; measuring attachments (e.g., sine bars) for machine tools; metalworking drill bits; and taps and dies. Agencies and statistical programs use this industry definition to consistently tabulate manufacturing data within Sector 31–33. ²

See also on G2X:

• G2X — NAICS 333515 overview: https://app.g2xchange.com/naics/333515
• G2X — PSC 3455 (Cutting Tools for Machine Tools): https://app.g2xchange.com/psc/3455
• G2X — PSC 3460 (Machine Tool Accessories): https://app.g2xchange.com/psc/3460

What this NAICS covers

• Accessories and attachments for metal-cutting machine tools. ²
• Accessories and attachments for metal-forming machine tools. ²
• Metalworking drill bits for machine tool applications. ²
• Taps and dies manufactured as machine-tool accessories. ²
• Knives and bits for metalworking lathes, planers, and shapers. ²
• Measuring attachments for machine tools, such as sine bars. ²

Related NAICS and PSC codes

Key inclusions and exclusions

• Includes: knives/bits for lathes, planers, shapers; metalworking drill bits; taps and dies; measuring attachments for machine tools. ²
• Excludes: saw blades and handsaws, which are classified in 332213. ²
• Excludes: accessories and attachments for cutting/forming machines other than metal-cutting/metal-forming machine tools, which are classified in 332212. ²
• Excludes: power-driven hand tools, classified in 333991. ²

Frequently asked questions

• What products are typical under NAICS 333515?
  Typical products include cutting tools and attachments for machine tools: metalworking drill bits; taps and dies; knives and bits for lathes, planers, and shapers; and measuring attachments such as sine bars that are designed for use with machine tools. ²

• How does 333515 differ from 333512 and 333513?
  333512 and 333513 cover manufacturing of the metal-cutting and metal-forming machine tools themselves. 333515 is limited to the accessories and attachments used with those machines, not the machines. ²

• Are saw blades and handheld power tools included in 333515?
  No. Saw blades and handsaws are classified in 332213, and power-driven hand tools fall under 333991. Items must be accessories for metal-cutting or metal-forming machine tools to fit 333515. ²

• Which PSC codes commonly align with 333515 procurements?
  Common PSCs include 3455 (Cutting Tools for Machine Tools) and 3460 (Machine Tool Accessories). For fixturing, 3465 (Production Jigs, Fixtures, and Templates) may also appear depending on the accessories procured. ³

• Where can official data for 333515 be found?
  The Economic Census provides industry tables for the 2022 NAICS vintage on data.census.gov, accessible via the Economic Census by Industry landing page. These tables present manufacturing statistics for Sector 31–33 and include coverage for 333515. ⁴

Useful resources

• G2X — NAICS 333515 overview: https://app.g2xchange.com/naics/333515
• Census Bureau — NAICS official site and background (includes current vintage): https://www.census.gov/naics/ ¹
• Census Bureau — NAICS 2022 definition for 333515: https://www.census.gov/naics/?input=333515&year=2022&details=333515 ²
• Acquisition.gov — Product and Service Code Manual (April 2025 PDF): https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf ³
• Census Bureau — Economic Census by Industry tables (2022 NAICS): https://www.census.gov/programs-surveys/economic-census/data/tables/industry.html ⁴

References

1. U.S. Census Bureau — North American Industry Classification System (NAICS): https://www.census.gov/naics/
2. U.S. Census Bureau — NAICS 2022 Definition for 333515: https://www.census.gov/naics/?input=333515&year=2022&details=333515
3. Acquisition.gov — Product and Service Code Manual (April 2025): https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
4. U.S. Census Bureau — Economic Census by Industry (tables): https://www.census.gov/programs-surveys/economic-census/data/tables/industry.html