2 SIC industries for “sic:339”

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SIC (Standard Industrial Classification) classifies businesses by their primary activity. It is used for marketing, business data, research, and regulatory filings. Learn about SIC →

  1. 3398 Metal Heat Treating

    Heat treating of metal for the trade.

    356 U.S. business records

  2. 3399 Primary Metal Products, Not Elsewhere Classified

    Primary metal products, not elsewhere classified, such as nonferrous nails, brads, and spikes, and metal powder, flakes, and paste.

    82 U.S. business records

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Sources & methodology

NAICS definitions: U.S. Census Bureau, 2022

SIC definitions: OSHA SIC Manual

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