NAICS Code 333515 — Cutting Tool and Machine Tool Accessory Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 5 national industries under 33351 (Metalworking Machinery Manufacturing).

Code	333515
Title	Cutting Tool and Machine Tool Accessory Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	500 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in manufacturing accessories and attachments for metal cutting and metal forming machine tools.

Illustrative Examples:

Knives and bits for metalworking lathes, planers, and shapers manufacturing

Measuring attachments (e.g., sine bars) for machine tool manufacturing

Metalworking drill bits manufacturing

Taps and dies (i.e., machine tool accessories) manufacturing

Cross-References.

Is a business under 333515 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 333515 qualifies as a small business if it does not exceed 500 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 333515 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	333	Machinery Manufacturing
Industry Group	3335	Metalworking Machinery Manufacturing
NAICS Industry	33351	Metalworking Machinery Manufacturing
National Industry	333515	Cutting Tool and Machine Tool Accessory 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
3545	Cutting Tools, Machine Tool Accessories, and Machinists' Precision Measuring Devices

Related National Industry codes

• 333511 — Industrial Mold Manufacturing
• 333514 — Special Die and Tool, Die Set, Jig, and Fixture Manufacturing
• 333517 — Machine Tool Manufacturing
• 333519 — Rolling Mill and Other Metalworking Machinery 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.