423510 — Metal Service Centers and Other Metal Merchant Wholesalers
Description
This industry comprises establishments primarily engaged in the merchant wholesale distribution of products of the primary metals industries. Service centers maintain inventory and may perform functions, such as sawing, shearing, bending, leveling, cleaning, or edging, on a custom basis as part of sales transactions (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Illustrative Examples
- Cast iron pipe merchant wholesalers
- Metal rods merchant wholesalers
- Metal bars (except precious) merchant wholesalers
- Metal sheets merchant wholesalers
- Metal spikes merchant wholesalers
- Metal ingots (except precious) merchant wholesalers
- Metal pipe merchant wholesalers
- Nails merchant wholesalers
- Metal plates merchant wholesalers
- Noninsulated wire merchant wholesalers
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 5051 - Metals Service Centers and Offices (via SIC1987:5051→NAICS1997:42151→2002:423510→2007:423510→2012:423510→2017:423510→2022:423510)
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 L095 — Technical Representation Services: Metal Bars, Sheets, and Shapes
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 423510 valid in 2022? ▾
Yes, 423510 is a valid 6-digit 2022 NAICS national industry code representing 'Metal Service Centers and Other Metal Merchant Wholesalers' under Sector 42 in the official classification index.
What is the SBA size standard for NAICS code 423510? ▾
The Small Business Administration (SBA) has established a small business size standard of 200 employees for NAICS code 423510 (Metal Service Centers and Other Metal Merchant Wholesalers), calculated based on employees.
What is the legacy SIC equivalent for NAICS 423510? ▾
According to official Census Bureau concordance tables, NAICS code 423510 (Metal Service Centers and Other Metal Merchant Wholesalers) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 5051 - Metals Service Centers and Offices.
Related Pages & Tools
Further regulatory reference links for NAICS code 423510:
- Sector 42 Directory Hub — List of related industries in the Wholesale Trade sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 423510 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Metal Service Centers and Other Metal Merchant Wholesalers).
- 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.