SIC 3999 to NAICS Code Crosswalk
The legacy 1987 SIC code 3999 (Manufacturing Industries, NEC) maps transitively to modern U.S. Census 2022 NAICS code(s): 316110, 325998, 326199, 332216, 332999, 333310, 335131, 335210, 336612, 337127, 339930, 339999.
Concordance Concordance Mapping Asset
| Source Code | Source Industry | Target Code | Target Industry | Relation | Concordance Path |
|---|---|---|---|---|---|
| SIC 3999 | Manufacturing Industries, NEC | NAICS 316110 | Leather and Hide Tanning and Finishing | One-to-Many | SIC1987:3999 → NAICS1997:31611 → 2002:316110 → 2007:316110 → 2012:316110 → 2017:316110 → 2022:316110 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 325998 | All Other Miscellaneous Chemical Product and Preparation Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:325998 → 2002:325998 → 2007:325998 → 2012:325998 → 2017:325998 → 2022:325998 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 326199 | All Other Plastics Product Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:326199 → 2002:326199 → 2007:326199 → 2012:326199 → 2017:326199 → 2022:326199 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 332216 | Saw Blade and Handtool Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:332212 → 2002:332212 → 2007:332212 → 2012:332216 → 2017:332216 → 2022:332216 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 332999 | All Other Miscellaneous Fabricated Metal Product Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:332999 → 2002:332999 → 2007:332999 → 2012:332999 → 2017:332999 → 2022:332999 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 333310 | Commercial and Service Industry Machinery Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:333319 → 2002:333319 → 2007:333319 → 2012:333318 → 2017:333318 → 2022:333310 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 335131 | Residential Electric Lighting Fixture Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:335121 → 2002:335121 → 2007:335121 → 2012:335121 → 2017:335121 → 2022:335131 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 335210 | Small Electrical Appliance Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:335211 → 2002:335211 → 2007:335211 → 2012:335210 → 2017:335210 → 2022:335210 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 336612 | Boat Building | One-to-Many | SIC1987:3999 → NAICS1997:326199 → 2002:326199 → 2007:336612 → 2012:336612 → 2017:336612 → 2022:336612 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 337127 | Institutional Furniture Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:337127 → 2002:337127 → 2007:337127 → 2012:337127 → 2017:337127 → 2022:337127 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 339930 | Doll, Toy, and Game Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:339932 → 2002:339932 → 2007:339932 → 2012:339930 → 2017:339930 → 2022:339930 |
| SIC 3999 | Manufacturing Industries, NEC | NAICS 339999 | All Other Miscellaneous Manufacturing | One-to-Many | SIC1987:3999 → NAICS1997:339999 → 2002:339999 → 2007:339999 → 2012:339999 → 2017:339999 → 2022:339999 |
Why Concordances Don't Line Up 1:1
The Standard Industrial Classification (SIC) system was established in 1937 and last updated in 1987, organizing businesses by end products. The North American Industry Classification System (NAICS) replaced it in 1997, classifying establishments by production processes. Because of this structural shift, many-to-many relationships are common, requiring chained concordance steps to bridge the historical gap.
Reverse Crosswalk: Going the other way? See the mapping at NAICS 316110 to SIC, NAICS 325998 to SIC, NAICS 326199 to SIC, NAICS 332216 to SIC, NAICS 332999 to SIC, NAICS 333310 to SIC, NAICS 335131 to SIC, NAICS 335210 to SIC, NAICS 336612 to SIC, NAICS 337127 to SIC, NAICS 339930 to SIC, NAICS 339999 to SIC.
Related Pages & Tools
- SIC Code 3999 Profile — Legacy OSHA definition and associated industrial metadata.
- SIC Major Group 39 Hub — Legacy category group directory.
- Interactive Crosswalk Engine — Convert any SIC or NAICS code dynamically.
Primary Ingestion Source
Data sourced from the U.S. Census Bureau Concordances (1997, 2002, 2007, 2012, 2017, and 2022 editions). Last verified on 2026-06-30.