333612 — Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing gears, speed changers, and industrial high-speed drives (except hydrostatic) (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Manufacturing motor vehicle power transmission equipment--are classified in Industry 336350, Motor
- Vehicle Transmission and Power Train Parts Manufacturing;
- Manufacturing aircraft power transmission equipment--are classified in U.S. Industry 336413, Other
- Aircraft Parts and Auxiliary Equipment Manufacturing; and
- Manufacturing industrial hydrostatic transmissions--are classified in U.S. Industry 333996, Fluid Power
- Pump and Motor Manufacturing.
- MANUFACTURING 255
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3566 - Speed Changers, Industrial High-Speed Drives, and Gears (via SIC1987:3566→NAICS1997:333612→2002:333612→2007:333612→2012:333612→2017:333612→2022:333612)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 333612 valid in 2022? ▾
Yes, 333612 is a valid 6-digit 2022 NAICS national industry code representing 'Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 333612? ▾
The Small Business Administration (SBA) has established a small business size standard of 750 employees for NAICS code 333612 (Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 333612? ▾
According to official Census Bureau concordance tables, NAICS code 333612 (Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3566 - Speed Changers, Industrial High-Speed Drives, and Gears.
Related Pages & Tools
Further regulatory reference links for NAICS code 333612:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 333612 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.