Includes
Gun Rifling Machines Speed Lathes.

Possible NAICS Codes
333517 – Machine Tool Manufacturing
332710 – Machine Shops
332510 – Hardware Manufacturing
333515 – Cutting Tool and Machine Tool Accessory Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332216 – Saw Blade and Handtool Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
423830 – Industrial Machinery and Equipment Merchant Wholesalers
444110 – Home Centers

Description
Electric Services

Possible NAICS Codes
221122 – Electric Power Distribution
221112 – Fossil Fuel Electric Power Generation
221118 – Other Electric Power Generation
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
221210 – Natural Gas Distribution
221121 – Electric Bulk Power Transmission and Control
926130 – Regulation and Administration of Communications, Electric, Gas, and Other Utilities
238210 – Electrical Contractors and Other Wiring Installation Contractors

Description
Quality Control Services: Plumbing, Heating, and Waste Disposal Equipment

Possible NAICS Codes
238220 – Plumbing, Heating, and Air-Conditioning Contractors
562112 – Hazardous Waste Collection
562211 – Hazardous Waste Treatment and Disposal
221111 – Hydroelectric Power Generation
541620 – Environmental Consulting Services
221310 – Water Supply and Irrigation Systems
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
621512 – Diagnostic Imaging Centers
562998 – All Other Miscellaneous Waste Management Services
562910 – Remediation Services

Includes
Crayons; Erasers; File Holders; Writing Ink; Printing Ink; Paper Fasteners; Pencils; Penholders and Pen Points; Rulers, Office Type; Art Supplies; Tape, Pressure Sensitive Adhesive

Excludes
Office Devices; Fountain Pens; Artists' Brushes; Paper Stationery; Record Forms; Mechanical Pencils.

Possible NAICS Codes
339940 – Office Supplies (except Paper) Manufacturing
459410 – Office Supplies and Stationery Retailers
322230 – Stationery Product Manufacturing
322120 – Paper Mills
325992 – Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing
444110 – Home Centers
424130 – Industrial and Personal Service Paper Merchant Wholesalers
332510 – Hardware Manufacturing
325520 – Adhesive Manufacturing
424120 – Stationery and Office Supplies Merchant Wholesalers

Includes
Engine, Turbine, Wind, and Hand Driven Generator Sets and Auxiliary Aircraft Generators.

Excludes
Motor-Converters: Motor-Generator Sets; Engine Generators; Engine Accessory Generators.

Possible NAICS Codes
335312 – Motor and Generator Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
332991 – Ball and Roller Bearing Manufacturing
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
333613 – Mechanical Power Transmission Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing

Description
Other Utilities

Possible NAICS Codes
221320 – Sewage Treatment Facilities
517111 – Wired Telecommunications Carriers
221310 – Water Supply and Irrigation Systems
926130 – Regulation and Administration of Communications, Electric, Gas, and Other Utilities
221122 – Electric Power Distribution
221210 – Natural Gas Distribution
516210 – Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers
561210 – Facilities Support Services
562111 – Solid Waste Collection
221112 – Fossil Fuel Electric Power Generation

Description
Maintenance, Repair and Rebuilding of Equipment: Electrical and Electronic Equipment Components

Possible NAICS Codes
811210 – Electronic and Precision Equipment Repair and Maintenance
541330 – Engineering Services
238210 – Electrical Contractors and Other Wiring Installation Contractors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
238290 – Other Building Equipment Contractors
561210 – Facilities Support Services
541519 – Other Computer Related Services
238220 – Plumbing, Heating, and Air-Conditioning Contractors
541512 – Computer Systems Design Services

Description
Maintenance, Repair and Rebuilding of Equipment: Plumbing, Heating, and Waste Disposal Equipment

Possible NAICS Codes
238220 – Plumbing, Heating, and Air-Conditioning Contractors
561210 – Facilities Support Services
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
236220 – Commercial and Institutional Building Construction
237110 – Water and Sewer Line and Related Structures Construction
334290 – Other Communications Equipment Manufacturing
561790 – Other Services to Buildings and Dwellings

Includes
Contactors: Motor Controllers; Power Servomechanisms; Switchgear; Voltage Regulators.

Excludes
Automatic Pilot Mechanisms; Relays; Resistors.

Possible NAICS Codes
334519 – Other Measuring and Controlling Device Manufacturing
335312 – Motor and Generator Manufacturing
335314 – Relay and Industrial Control Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332510 – Hardware Manufacturing
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
333618 – Other Engine Equipment Manufacturing
335313 – Switchgear and Switchboard Apparatus Manufacturing
335311 – Power, Distribution, and Specialty Transformer Manufacturing
334413 – Semiconductor and Related Device Manufacturing

Includes
Circuit Breakers and Cutouts.

Excludes
Relays.

Possible NAICS Codes
335313 – Switchgear and Switchboard Apparatus Manufacturing
221118 – Other Electric Power Generation
444180 – Other Building Material Dealers
333618 – Other Engine Equipment Manufacturing
333120 – Construction Machinery Manufacturing
333992 – Welding and Soldering Equipment Manufacturing
334419 – Other Electronic Component Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing

Possible NAICS Codes
237130 – Power and Communication Line and Related Structures Construction
237990 – Other Heavy and Civil Engineering Construction
335313 – Switchgear and Switchboard Apparatus Manufacturing
333923 – Overhead Traveling Crane, Hoist, and Monorail System Manufacturing
238290 – Other Building Equipment Contractors
238210 – Electrical Contractors and Other Wiring Installation Contractors
238150 – Glass and Glazing Contractors
221310 – Water Supply and Irrigation Systems
221111 – Hydroelectric Power Generation

Possible NAICS Codes
236220 – Commercial and Institutional Building Construction
238160 – Roofing Contractors
238990 – All Other Specialty Trade Contractors
238220 – Plumbing, Heating, and Air-Conditioning Contractors
238210 – Electrical Contractors and Other Wiring Installation Contractors
561210 – Facilities Support Services
238330 – Flooring Contractors
238320 – Painting and Wall Covering Contractors
236210 – Industrial Building Construction
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance

Possible NAICS Codes
238990 – All Other Specialty Trade Contractors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
237990 – Other Heavy and Civil Engineering Construction
562910 – Remediation Services
333995 – Fluid Power Cylinder and Actuator Manufacturing
332911 – Industrial Valve Manufacturing
238210 – Electrical Contractors and Other Wiring Installation Contractors
237130 – Power and Communication Line and Related Structures Construction
221111 – Hydroelectric Power Generation

Description
Installation of Equipment: Electric Wire, and Power and Distribution Equipment

Possible NAICS Codes
238210 – Electrical Contractors and Other Wiring Installation Contractors
236220 – Commercial and Institutional Building Construction
237130 – Power and Communication Line and Related Structures Construction
335311 – Power, Distribution, and Specialty Transformer Manufacturing
221122 – Electric Power Distribution
541512 – Computer Systems Design Services
237990 – Other Heavy and Civil Engineering Construction
541519 – Other Computer Related Services
238290 – Other Building Equipment Contractors
811210 – Electronic and Precision Equipment Repair and Maintenance

Description
Maintenance, Repair and Rebuilding of Equipment: Instruments and Laboratory Equipment

Possible NAICS Codes
811210 – Electronic and Precision Equipment Repair and Maintenance
334516 – Analytical Laboratory Instrument Manufacturing
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
561210 – Facilities Support Services
541380 – Testing Laboratories and Services
334515 – Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals