NAICS UNIVERSITY · Free research for insurance agents
Machine Shops
NAICS 332710 · United States · 2022 edition
This industry comprises establishments known as machine shops primarily engaged in machining metal and plastic parts and parts of other composite materials on a job or order basis. Generally machine shop jobs are low volume using machine tools, such as lathes (including computer numerically controlled); automatic screw machines; and machines for boring, grinding, milling, and additive manufacturing.
Start the review with workers' compensation.
For Machine Shops, the saved research highlights workers' compensation, products liability, commercial property. Confirm how these arise in the actual operation, what controls are used and whether additional services change the proposed coverage.
Questions to ask
- What industries and end-use applications do the machined parts go into — automotive, aerospace, medical, general industrial?
- What is the replacement cost of the shop's CNC equipment and precision tooling?
- Are any customer-owned materials, tooling, or fixtures stored on premises, and what are they worth?
- Does the shop work with any hazardous materials such as beryllium, exotic alloys, or specialty coatings?
- What is the shop's quality certification status — ISO 9001, AS9100, ISO 13485, or similar?
- Is there a formal lockout/tagout and machine guarding safety program in place?
- For Machine Shops, what should the underwriter know about work for aerospace, defense, nuclear, or medical device customers without specialty admitted placement or appropriate products liability limits?
- For Machine Shops, what should the underwriter know about exotic or hazardous materials such as beryllium, titanium alloys, or radioactive components?
Activities described by this code
Other activities to examine
- Machining precision products, known as precision turned manufacturers: 332721 — Precision Turned Product Manufacturing
- Manufacturing metal bolts, nuts, screws, rivets, washers, and other industrial fasteners using machines, such as headers, threaders, and nut forming machines: 332722 — Bolt, Nut, Screw, Rivet, and Washer Manufacturing
- Manufacturing stampings (except motor vehicle): 332119 — Metal Crown, Closure, and Other Metal Stamping (except Automotive)
- Manufacturing weldments and fabricated metal plate products: 332313 — Plate Work Manufacturing
- Coating, engraving, and heat treating metals and metal formed products fabricated elsewhere: 33281 — Coating, Engraving, Heat Treating, and Allied Activities
Census classification reference
For educational purposes only. AI-generated insurance research and automated logic can contain errors. Independently verify classification and coverage decisions.
Compare another operationInsurance operations research — draft
Machine shops perform precision cutting, turning, boring, grinding, and milling of metal, plastic, and composite parts on a job-order basis, typically using CNC lathes, mills, and machining centers. Work is generally low-volume and custom, produced to customer specifications. Finished parts are shipped to manufacturers or assemblers for incorporation into larger products.
Questions to investigate
- What industries and end-use applications do the machined parts go into — automotive, aerospace, medical, general industrial?
- What is the replacement cost of the shop's CNC equipment and precision tooling?
- Are any customer-owned materials, tooling, or fixtures stored on premises, and what are they worth?
- Does the shop work with any hazardous materials such as beryllium, exotic alloys, or specialty coatings?
This insurance research was generated in April 2026. It has not received a complete human review. The October 12, 2026 audit checked codes and titles only, not descriptions or coverage assertions.