332710 — Machine Shops
Description
This industry comprises establishments known as machine shops primarily engaged in machining metal and plastic parts and parts of other composite materials on a job or order basis. Generally machine shop jobs are low volume using machine tools, such as lathes (including computer numerically controlled); automatic screw machines; and machines for boring, grinding, milling, and additive manufacturing.
Exclusions & Cross-References
- Machining precision products, known as precision turned manufacturers--are classified in U.S. Industry
- 332721, Precision Turned Product Manufacturing;
- Manufacturing metal bolts, nuts, screws, rivets, washers, and other industrial fasteners using machines,
- such as headers, threaders, and nut forming machines--are classified in U.S. Industry 332722, Bolt, Nut,
- Screw, Rivet, and Washer Manufacturing;
- Manufacturing stampings (except motor vehicle)--are classified in U.S. Industry 332119, Metal Crown,
- Closure, and Other Metal Stamping (except Automotive);
- Manufacturing weldments and fabricated metal plate products--are classified in U.S. Industry 332313, Plate
- Work Manufacturing;
- Coating, engraving, and heat treating metals and metal formed products fabricated elsewhere--are classified
- in Industry 33281, Coating, Engraving, Heat Treating, and Allied Activities;
- Manufacturing foundry patterns--are classified in U.S. Industry 332999, All Other Miscellaneous
Overview Facts
| NAICS Code | 332710 |
|---|---|
| Industry Title | Machine Shops |
| SBA Size Standard | 500 employees |
| IRS PBA Code | 332700 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 332 → 3327 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3599 - Industrial and Commercial Machinery and Equipment, NEC (via SIC1987:3599→NAICS1997:33271→2002:332710→2007:332710→2012:332710→2017:332710→2022:332710)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 332710:
- 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.
- 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.
Related Industries in 3327
Frequently Asked Questions (FAQ)
Is 332710 a valid 2022 NAICS code?
NAICS 332710 is 'Machine Shops', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 500 employees.
What is the SBA size standard for NAICS 332710?
The SBA small business size standard for NAICS 332710 is 500 employees (based on employees).
What is the legacy SIC code mapping for 332710?
NAICS code 332710 maps to the legacy 1987 SIC codes: 3599 - Industrial and Commercial Machinery and Equipment, NEC.