811310 — Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
Description
This industry comprises establishments primarily engaged in the repair and maintenance of commercial and industrial machinery and equipment. Establishments in this industry either sharpen/install commercial and industrial machinery blades and saws or provide welding (e.g., automotive, general) repair services; or repair agricultural and other heavy and industrial machinery and equipment (e.g., forklifts and other material handling equipment, machine tools, commercial refrigeration equipment, construction equipment, and mining machinery) (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 7623 - Refrigeration and Air-Conditioning Service and Repair Shops (via SIC1987:7623→NAICS1997:81131→2002:811310→2007:811310→2012:811310→2017:811310→2022:811310)
- SIC 7692 - Welding Repair (via SIC1987:7692→NAICS1997:81131→2002:811310→2007:811310→2012:811310→2017:811310→2022:811310)
- SIC 7694 - Armature Rewinding Shops (via SIC1987:7694→NAICS1997:81131→2002:811310→2007:811310→2012:811310→2017:811310→2022:811310)
- SIC 7699 - Repair Shops and Related Services, NEC (via SIC1987:7699→NAICS1997:81131→2002:811310→2007:811310→2012:811310→2017:811310→2022:811310)
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 J036 — Maintenance, Repair and Rebuilding of Equipment: Special Industry Machinery
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 811310 valid in 2022? ▾
Yes, 811310 is a valid 6-digit 2022 NAICS national industry code representing 'Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance' under Sector 81 in the official classification index.
What is the SBA size standard for NAICS code 811310? ▾
The Small Business Administration (SBA) has established a small business size standard of $12,500,000 for NAICS code 811310 (Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 811310? ▾
According to official Census Bureau concordance tables, NAICS code 811310 (Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 7623 - Refrigeration and Air-Conditioning Service and Repair Shops, 7692 - Welding Repair, 7694 - Armature Rewinding Shops, 7699 - Repair Shops and Related Services, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 811310:
- Sector 81 Directory Hub — List of related industries in the Other Services (except Public Administration) sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 811310 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance).
- 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.