NAICS Code 327999 — All Other Miscellaneous Nonmetallic Mineral Product Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 4 national industries under 32799 (All Other Nonmetallic Mineral Product Manufacturing).

Code	327999
Title	All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	750 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in manufacturing nonmetallic mineral products (except pottery, ceramics, and plumbing fixtures; clay building materials and refractories; glass and glass products; cement; ready-mix concrete; concrete products; lime; gypsum products; abrasive products; cut stone and stone products; ground and treated minerals and earth; and mineral wool).

Illustrative Examples:

Dry mix concrete manufacturing

Mica products manufacturing

Manmade and engineered proppants (e.g., resin-coated sand, ceramic materials) manufacturing

Stucco and stucco products manufacturing

Synthetic stones, for gem stones and industrial use, manufacturing

Is a business under 327999 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 327999 qualifies as a small business if it does not exceed 750 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 327999 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	327	Nonmetallic Mineral Product Manufacturing
Industry Group	3279	Other Nonmetallic Mineral Product Manufacturing
NAICS Industry	32799	All Other Nonmetallic Mineral Product Manufacturing
National Industry	327999	All Other Miscellaneous Nonmetallic Mineral Product Manufacturing

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
3272	Concrete Products, Except Block and Brick
3292	Asbestos Products
3299	Nonmetallic Mineral Products, Not Elsewhere Classified

Related National Industry codes

• 327991 — Cut Stone and Stone Product Manufacturing
• 327992 — Ground or Treated Mineral and Earth Manufacturing
• 327993 — Mineral Wool Manufacturing

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.