SIC Code 1731 — Electrical Work

4-digit industry in the 1987 Standard Industrial Classification — still requested by banks, insurers, SEC filings and legacy systems.

Code	1731
Title	Electrical Work
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The SIC was last revised in 1987 and officially superseded by NAICS in 1997, but it never fully disappeared: the SEC still tags EDGAR filings with SIC codes, and many banks, insurers and legacy databases keep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 1731

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
238210	Electrical Contractors	238210 (same code)

Other SIC codes in 17xx

• 1711 — Plumbing, Heating and Air-Conditioning
• 1721 — Painting and Paper Hanging
• 1741 — Masonry, Stone Setting, and Other Stone Work
• 1742 — Plastering, Drywall, Acoustical, and Insulation Work
• 1743 — Terrazzo, Tile, Marble, and Mosaic Work
• 1751 — Carpentry Work
• 1752 — Floor Laying and Other Floor Work, Not Elsewhere Classified
• 1761 — Roofing, Siding, and Sheet Metal Work
• 1771 — Concrete Work
• 1781 — Water Well Drilling
• 1791 — Structural Steel Erection
• 1793 — Glass and Glazing Work

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.