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Official North American industry classification system for business reporting and analysis.

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What Is an SIC 6-Digit Code?
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SIC 6-Digit Codes for "sic:339"

SIC Marketing Level codes provide more specific industry categories within official 4-digit SIC classifications, supporting more precise industry segmentation, market research, and business targeting. For official SIC classification, use the 4-digit SIC code.

Search this keyword in NAICS 8-Digit codes.

companies

Verified U.S. companies available for purchase in this industry. Counts are based on primary business classifications.

Industry SIC 6-Digit U.S. companies Add

Heat Treating Metal (Manufacturing)

Parent: Metal Heat Treating

 SIC Marketing Level 3398-01 companies 318companies

Shot Peening (Manufacturing)

Parent: Metal Heat Treating

 SIC Marketing Level 3398-02 companies 21companies

Lead Burning (Manufacturing)

Parent: Metal Heat Treating

 SIC Marketing Level 3398-03 companies 1companies

Cryogenic Processing (Manufacturing)

Parent: Metal Heat Treating

 SIC Marketing Level 3398-04 companies 39companies

Balls-Steel Bronze Etc (Manufacturing)

Parent: Primary Metal Products, Not Elsewhere Classified

 SIC Marketing Level 3399-01 companies 5companies

Laminations-Motor & Transformer (Manufacturing)

Parent: Primary Metal Products, Not Elsewhere Classified

 SIC Marketing Level 3399-02 companies 2companies

Powder Metal Parts-Industrial (Manufacturing)

Parent: Primary Metal Products, Not Elsewhere Classified

 SIC Marketing Level 3399-03 companies 16companies

Primary Metal Products NEC (Manufacturing)

Parent: Primary Metal Products, Not Elsewhere Classified

 SIC Marketing Level 3399-04 companies 58companies

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NAICS definitions: U.S. Census Bureau, 2022

SIC definitions: OSHA SIC Manual

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