335921 — Fiber Optic Cable Manufacturing
NAICS 335921 is 'Fiber Optic Cable Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,000 employees.
Description
This U.S. industry comprises establishments primarily engaged in manufacturing insulated fiber optic cable from purchased fiber optic strand.
Exclusions & Cross-References
- Manufacturing unsheathed fiber optic materials--are classified in Industry 32721, Glass and Glass Product
- Manufacturing; and
- Manufacturing insulated nonferrous wire and cable from purchased wire--are classified in U.S. Industry
- 335929, Other Communication and Energy Wire Manufacturing.
Overview Facts
| NAICS Code | 335921 |
|---|---|
| Industry Title | Fiber Optic Cable Manufacturing |
| SBA Size Standard | 1,000 employees |
| IRS PBA Code | 335900 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 335 → 3359 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
NAICS Structure: 335921
National Industry
Sector (2)
31-33
Manufacturing
Subsector (3)
335
Electrical Equipment, Appliance, and Component Manufacturing
Industry Group (4)
3359
Other Electrical Equipment and Component Manufacturing
Industry (5)
33592
Communication and Energy Wire and Cable Manufacturing
National Industry (6)
335921
Fiber Optic Cable Manufacturing
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3357 - Drawing and Insulating of Nonferrous Wire (via SIC1987:3357→NAICS1997:335921→2002:335921→2007:335921→2012:335921→2017:335921→2022:335921)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 335921:
- 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 3359
Frequently Asked Questions (FAQ)
Is 335921 a valid 2022 NAICS code?
NAICS 335921 is 'Fiber Optic Cable Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,000 employees.
What is the SBA size standard for NAICS 335921?
The SBA small business size standard for NAICS 335921 is 1,000 employees (based on employees).
What is the legacy SIC code mapping for 335921?
NAICS code 335921 maps to the legacy 1987 SIC codes: 3357 - Drawing and Insulating of Nonferrous Wire.