332721 — Precision Turned Product Manufacturing
Description
This U.S. industry comprises establishments known as precision turned manufacturers primarily engaged in machining precision products of all materials on a job or order basis. Generally precision turned product jobs are large volume using machines, such as automatic screw machines, rotary transfer machines, computer numerically controlled (CNC) lathes, or turning centers (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- 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; and
- Machining parts, known as machine shops--are classified in Industry 332710, Machine Shops.
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 3451 - Screw Machine Products (via SIC1987:3451→NAICS1997:332721→2002:332721→2007:332721→2012:332721→2017:332721→2022:332721)
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 5320 — Rivets
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 332721 valid in 2022? ▾
Yes, 332721 is a valid 6-digit 2022 NAICS national industry code representing 'Precision Turned Product Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 332721? ▾
The Small Business Administration (SBA) has established a small business size standard of 500 employees for NAICS code 332721 (Precision Turned Product Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 332721? ▾
According to official Census Bureau concordance tables, NAICS code 332721 (Precision Turned Product Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3451 - Screw Machine Products.
Related Pages & Tools
Further regulatory reference links for NAICS code 332721:
- 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 332721 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Precision Turned Product Manufacturing).
- IRS PBA Code for Machine Shops — Principal Business Activity tax reporting details.
- 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.