2022 NAICS national industry in sector 31-33 Manufacturing
327991 Cut Stone and Stone Product Manufacturing
NAICS 327991 is the US industry code for cut stone and stone product manufacturing. This U.S.
- Code
- 327991 (2022 NAICS)
- Title
- Cut Stone and Stone Product Manufacturing
- Part of
- All Other Nonmetallic Mineral Product Manufacturing
- SBA small business limit
- Up to 500 employees
- Closest UK SIC
- 23910, 23990 (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 U.S. industry comprises establishments primarily engaged in cutting, shaping, and finishing granite, marble, limestone, slate, and other stone for building and miscellaneous uses. Stone product manufacturing establishments may mine, quarry, or purchase stone.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Mining or quarrying stone are classified in Industry Group 2123, Nonmetallic Mineral Mining and Quarrying.
- Buying and selling semi-finished monuments and tombstones with no work other than polishing, lettering, or shaping to custom order are classified in Sector 42, Wholesale Trade, or Sector 44-45, Retail Trade.
Activities listed under 327991
The Census index assigns these 18 activities to this code. If your business matches one, this is your code.
- Architectural sculptures, stone, manufacturing
- Baptismal fonts, cut stone, manufacturing
- Blackboards, unframed, slate, manufacturing
- Burial vaults, stone, manufacturing
- Countertops, stone, manufacturing
- Curbing, granite and stone, manufacturing
- Cut stone bases (e.g., desk sets pedestals, lamps, plaques and similar small particles) manufacturing
- Cut stone products (e.g., blocks, statuary) manufacturing
- Dimension stone dressing and manufacturing
- Dimension stone for buildings manufacturing
- Ecclesiastical statuary, stone, manufacturing
- Flagstones cutting
- Furniture, cut stone (i.e., benches, tables, church), manufacturing
- Garden furniture, stone, manufacturing
- Monuments and tombstones, cut stone, manufacturing
- Slate products manufacturing
- Statuary, marble, manufacturing
- Table tops, marble, manufacturing
SBA size standard for 327991
To count as a small business for SBA loans and federal contracts under NAICS 327991, your business (including affiliates) must not exceed 500 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: 2396), so treat them as a starting point and check the definition.
- 23910Production of abrasive productsUK SIC
- 23990Manufacture of other non-metallic mineral products n.e.c.UK SIC
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.