334517 — Irradiation Apparatus Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing irradiation apparatus and tubes for applications, such as medical diagnostic, medical therapeutic, industrial, research, and scientific evaluation. Irradiation can take the form of beta-rays, gamma-rays, X-rays, or other ionizing radiation (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
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 3844 - X-Ray Apparatus and Tubes and Related Irradiation Apparatus (via SIC1987:3844→NAICS1997:334517→2002:334517→2007:334517→2012:334517→2017:334517→2022:334517)
- SIC 3845 - Electromedical and Electrotherapeutic Apparatus (via SIC1987:3845→NAICS1997:334517→2002:334517→2007:334517→2012:334517→2017:334517→2022:334517)
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 6525 — X-Ray Equipment and Supplies: Medical, Dental, Veterinary
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 334517 valid in 2022? ▾
Yes, 334517 is a valid 6-digit 2022 NAICS national industry code representing 'Irradiation Apparatus Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 334517? ▾
The Small Business Administration (SBA) has established a small business size standard of 1,200 employees for NAICS code 334517 (Irradiation Apparatus Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 334517? ▾
According to official Census Bureau concordance tables, NAICS code 334517 (Irradiation Apparatus Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3844 - X-Ray Apparatus and Tubes and Related Irradiation Apparatus, 3845 - Electromedical and Electrotherapeutic Apparatus.
Related Pages & Tools
Further regulatory reference links for NAICS code 334517:
- 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 334517 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Irradiation Apparatus 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.