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.
Overview Facts
| NAICS Code | 334517 |
|---|---|
| Industry Title | Irradiation Apparatus Manufacturing |
| SBA Size Standard | 1,200 employees |
| IRS PBA Code | 334500 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 334 → 3345 |
| 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 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)
Related Resources & Compliance Guides
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.
- 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 3345
Frequently Asked Questions (FAQ)
Is 334517 a valid 2022 NAICS code?
NAICS 334517 is 'Irradiation Apparatus Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,200 employees.
What is the SBA size standard for NAICS 334517?
The SBA small business size standard for NAICS 334517 is 1,200 employees (based on employees).
What is the legacy SIC code mapping for 334517?
NAICS code 334517 maps to the legacy 1987 SIC codes: 3844 - X-Ray Apparatus and Tubes and Related Irradiation Apparatus, 3845 - Electromedical and Electrotherapeutic Apparatus.