2022 NAICS national industry in sector 42 Wholesale Trade
423510 Metal Service Centers and Other Metal Merchant Wholesalers
NAICS 423510 is the US industry code for metal service centers and other metal merchant wholesalers. It covers establishments primarily engaged in the merchant wholesale distribution of products of the primary metals industries.
- Code
- 423510 (2022 NAICS)
- Title
- Metal Service Centers and Other Metal Merchant Wholesalers
- Part of
- Metal and Mineral (except Petroleum) Merchant Wholesalers
- SBA small business limit
- Up to 200 employees
- Closest UK SIC
- 46620 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
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.
Examples Census gives
- 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
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Merchant wholesale distribution of gold, silver, and platinum are classified in Industry 423940, Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers.
- Merchant wholesale distribution of automotive, industrial, and other recyclable metal scrap are classified in Industry 423930, Recyclable Material Merchant Wholesalers.
- Merchant wholesale distribution of insulated wire are classified in Industry 423610, Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers.
Activities listed under 423510
The Census index assigns these 60 activities to this code. If your business matches one, this is your code.
- Aluminum and aluminum alloy primary forms merchant wholesalers
- Aluminum foil, plate, sheet, coil, and roll products merchant wholesalers
- Bars, metal (except precious), merchant wholesalers
- Bearing piles, metal, merchant wholesalers
- Billets, metal, merchant wholesalers
- Black plate merchant wholesalers
- Blooms, metal, merchant wholesalers
- Cable, wire (except insulated), merchant wholesalers
- Carbon and alloy steel primary forms merchant wholesalers
- Cast iron pipe merchant wholesalers
- Castings, metal, merchant wholesalers
- Concrete reinforcing bars merchant wholesalers
- Copper and copper alloy primary forms merchant wholesalers
- Ferroalloys merchant wholesalers
- Ferrous metals merchant wholesalers
- Forgings, metal, merchant wholesalers
- Foundry products merchant wholesalers
- Galvanized iron and steel products merchant wholesalers
- Grinding balls merchant wholesalers
- Ingots (except precious) merchant wholesalers
- Lead primary forms merchant wholesalers
- Metal pipe merchant wholesalers
- Metal products (e.g., bars, ingots, plates, rods, shapes, sheets) merchant wholesalers
- Metals sales offices
- Metals service centers
- Metals, ferrous and nonferrous, merchant wholesalers
- Nails merchant wholesalers
- Nickel and nickel alloy primary forms merchant wholesalers
- Nonferrous metals (except precious) merchant wholesalers
- Noninsulated wire merchant wholesalers
- Pig iron merchant wholesalers
- Pilings, metal, merchant wholesalers
- Pipe, metal, merchant wholesalers
- Poles, metal, merchant wholesalers
- Posts, metal, merchant wholesalers
- Rails and accessories, metal, merchant wholesalers
- Reinforcement mesh and wire merchant wholesalers
- Rods, metal (except precious), merchant wholesalers
- Ropes, wire (except insulated), merchant wholesalers
- Semi-finished metal products merchant wholesalers
- Sewer pipe, metal, merchant wholesalers
- Spikes, metal, merchant wholesalers
- Springs, steel, merchant wholesalers
- Stainless steel merchant wholesalers
- Steel merchant wholesalers
- Steel wire cloth (screening) merchant wholesalers
- Steel wool merchant wholesalers
- Storage tanks, metal, merchant wholesalers
- Strips, metal (except precious), merchant wholesalers
- Structural assemblies, metal, merchant wholesalers
- Tanks, storage metal, merchant wholesalers
- Terneplate merchant wholesalers
- Tin and tin alloy primary forms merchant wholesalers
- Tin plate merchant wholesalers
- Tubing, metal, merchant wholesalers
- Wire (except insulated) merchant wholesalers
- Wire and cable (except electrical) merchant wholesalers
- Wire rope (except insulated) merchant wholesalers
- Wire screening merchant wholesalers
- Zinc and zinc alloy primary forms merchant wholesalers
SBA size standard for 423510
To count as a small business for SBA loans and federal contracts under NAICS 423510, your business (including affiliates) must not exceed 200 employees. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 4662), so treat them as a starting point and check the definition.
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
Data last changed November 14, 2026. How this page is built.