SIC Code 3644 — Noncurrent-Carrying Wiring Devices
4-digit industry in the 1987 Standard Industrial Classification — still requested by banks, insurers, SEC filings and legacy systems.
| Code | 3644 |
|---|---|
| Title | Noncurrent-Carrying Wiring Devices |
| System | SIC 1987 (final edition — replaced by NAICS in 1997) |
The SIC was last revised in 1987 and officially superseded by NAICS in 1997, but it never fully disappeared: the SEC still tags EDGAR filings with SIC codes, and many banks, insurers and legacy databases keep requesting it. That is why converting between the two systems is still routine work.
NAICS equivalents of SIC 3644
From the official U.S. Census concordance (1987 SIC → 2002 NAICS). Where the 2002 code no longer exists in NAICS 2022, the closest current code is shown.
| NAICS 2002 | Title (2002) | Current 2022 code |
|---|---|---|
332212 | Hand and Edge Tool Manufacturing | superseded — closest: 33221 Cutlery and Handtool Manufacturing |
335932 | Noncurrent-Carrying Wiring Device Manufacturing | 335932 (same code) |
Other SIC codes in 36xx
3612— Power, Distribution, and Specialty Transformers3613— Switchgear and Switchboard Apparatus3621— Motors and Generators3624— Carbon and Graphite Products3625— Relays and Industrial Controls3629— Electrical Industrial Apparatus, Not Elsewhere Classified3631— Household Cooking Equipment3632— Household Refrigerators and Home and Farm Freezers3633— Household Laundry Equipment3634— Electric Housewares and Fans3635— Household Vacuum Cleaners3639— Household Appliances, Not Elsewhere Classified
Convert SIC codes in bulk
Use the free SIC to NAICS crosswalk (paste whole lists), search by activity with the NAICS lookup, or automate via the API.
Data: 1987 SIC titles (OSHA/Census) and official Census concordance — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.