SIC Code 3599 — Industrial and Commercial Machinery and Equipment, Not Elsewhere Classified

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

Code	3599
Title	Industrial and Commercial Machinery and Equipment, Not Elsewhere Classified
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The SIC was last revised in 1987 and officially superseded by NAICS in 1997, but it never fully disappeared: the SEC still tags EDGAR filings with SIC codes, and many banks, insurers and legacy databases keep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 3599

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
332710	Machine Shops	332710 (same code)
332813	Electroplating, Plating, Polishing, Anodizing and Coloring	332813 (same code)
332999	All Other Miscellaneous Fabricated Metal Product Manufacturing	332999 (same code)
333319	Other Commercial and Service Industry Machinery Manufacturing	superseded — closest: 33331 Commercial and Service Industry Machinery Manufacturing
333999	All Other Miscellaneous General Purpose Machinery Manufacturing	superseded — closest: 33399 All Other General Purpose Machinery Manufacturing
334519	Other Measuring and Controlling Device Manufacturing	334519 (same code)
336399	All Other Motor Vehicle Parts Manufacturing	superseded — closest: 33639 Other Motor Vehicle Parts Manufacturing

Other SIC codes in 35xx

• 3511 — Steam, Gas, and Hydraulic Turbines, and Turbine Generator Set Units
• 3519 — Internal Combustion Engines, Not Elsewhere Classified
• 3523 — Farm Machinery and Equipment
• 3524 — Lawn and Garden Tractors and Home Lawn and Garden Equipment
• 3531 — Construction Machinery and Equipment
• 3532 — Mining Machinery and Equipment, Except Oil and Gas Field Machinery and Equipment
• 3533 — Oil and Gas Field Machinery and Equipment
• 3534 — Elevators and Moving Stairways
• 3535 — Conveyors and Conveying Equipment
• 3536 — Overhead Traveling Cranes, Hoists, and Monorail Systems
• 3537 — Industrial Trucks, Tractors, Trailers, and Stackers
• 3541 — Machine Tools, Metal Cutting Types

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.