Includes
Evaporators.

Possible NAICS Codes
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
333994 – Industrial Process Furnace and Oven Manufacturing
326220 – Rubber and Plastics Hoses and Belting Manufacturing
333618 – Other Engine Equipment Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
335139 – Electric Lamp Bulb and Other Lighting Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
325199 – All Other Basic Organic Chemical Manufacturing
332112 – Nonferrous Forging

Includes
Crucible Furnaces; Cupola Furnaces.

Excludes
Food Industry Ovens (FSC 7310); Metal Heat Treating Furnaces (FSC 3424); Laboratory Type Furnaces (FSC 6640).

Possible NAICS Codes
333994 – Industrial Process Furnace and Oven Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333248 – All Other Industrial Machinery Manufacturing
331513 – Steel Foundries (except Investment)
332510 – Hardware Manufacturing
333414 – Heating Equipment (except Warm Air Furnaces) Manufacturing
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
541330 – Engineering Services

Includes
Hardening, Annealing, Tempering, Normalizing, Cyaniding, and Carburizing Equipment; Furnaces, Flue Welding, Non- Thermal Stress Relieving Systems.

Possible NAICS Codes
333994 – Industrial Process Furnace and Oven Manufacturing
332710 – Machine Shops
332813 – Electroplating, Plating, Polishing, Anodizing, and Coloring
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
332811 – Metal Heat Treating
333517 – Machine Tool Manufacturing
332721 – Precision Turned Product Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333414 – Heating Equipment (except Warm Air Furnaces) Manufacturing
331222 – Steel Wire Drawing

Includes
Laboratory Glassware; Laboratory Funnels; Laboratory Furnaces; Glass Beads; Laboratory White Sand; Litmus Paper; Paper Filters; Insect Transfixion Pins; Laboratory Glass Wool; Laboratory Furniture, except Dental Laboratory.

Excludes
Instruments covered by other classes in group 66; Dental Laboratory Equipment; Laboratory Scales and Balances; In Vitro Diagnostic Substances and Reagents.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339999 – All Other Miscellaneous Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing

Description
Maintenance, Repair and Rebuilding of Equipment: Furnace, Steam Plant, and Drying Equipment; and Nuclear Reactors

Possible NAICS Codes
238220 – Plumbing, Heating, and Air-Conditioning Contractors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
333994 – Industrial Process Furnace and Oven Manufacturing
561210 – Facilities Support Services
332410 – Power Boiler and Heat Exchanger Manufacturing
221330 – Steam and Air-Conditioning Supply
561790 – Other Services to Buildings and Dwellings
541380 – Testing Laboratories and Services
236220 – Commercial and Institutional Building Construction
334290 – Other Communications Equipment Manufacturing

Includes
Dishwashing Machines; Food Slicing Machines; Food Mixers; Utility Carts Specially designed for use in Kitchen and Dining Area.

Excludes
Sinks; Serving Carts (see class 7310 for Food Serving Carts).

Possible NAICS Codes
333241 – Food Product Machinery Manufacturing
339994 – Broom, Brush, and Mop Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
335220 – Major Household Appliance Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
811412 – Appliance Repair and Maintenance
423620 – Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers
327110 – Pottery, Ceramics, and Plumbing Fixture Manufacturing
332215 – Metal Kitchen Cookware, Utensil, Cutlery, and Flatware (except Precious) Manufacturing
312112 – Bottled Water Manufacturing

Includes
Compactors; Destructors; Garbage Disposals; Incinerators; Septic Tanks.

Possible NAICS Codes
332913 – Plumbing Fixture Fitting and Trim Manufacturing
562991 – Septic Tank and Related Services
333310 – Commercial and Service Industry Machinery Manufacturing
562111 – Solid Waste Collection
562213 – Solid Waste Combustors and Incinerators
333414 – Heating Equipment (except Warm Air Furnaces) Manufacturing
332439 – Other Metal Container Manufacturing
562211 – Hazardous Waste Treatment and Disposal
562998 – All Other Miscellaneous Waste Management Services
562112 – Hazardous Waste Collection

Includes
Warming and/or Chilling Tables, Stationary and Portable; Serving Carts; Field and Mobile Baking Ovens; Toasters; Waffle Irons; Grills; Special Aircraft, Marine, and Railway Type Food Cooking Equipment; Utensils with Integral Heating Units; Cafeteria Type Display Cases and Showcases; Soda Fountains; Milk, Soda, and/or Ice Cream Dispensers; Cold Food Counters; Combination Heated-Refrigerated Food Serving Equipment; Carbonators; and other types of refrigerated food serving and display equipment commonly used in cafeterias, mess hall kitchens, and the like.

Excludes
Carts other than Serving; Commissary or Food Store Type Refrigeration Equipment; Commercial Household, or Professional and Scientific Refrigerators; Drinking Fountains; (see class 4110 for items excluded from class 7310).

Notes
This class includes warming and/ or chilling equipment used for the display and serving of food.

Possible NAICS Codes
333241 – Food Product Machinery Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
325211 – Plastics Material and Resin Manufacturing
332215 – Metal Kitchen Cookware, Utensil, Cutlery, and Flatware (except Precious) Manufacturing
322230 – Stationery Product Manufacturing
337215 – Showcase, Partition, Shelving, and Locker Manufacturing

Includes
Flow-Pressure Instruments; Taximeters; Dynamometers.

Excludes
Dental, Medical, Surgical, and Veterinary Instruments.

Possible NAICS Codes
334519 – Other Measuring and Controlling Device Manufacturing
334513 – Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
334515 – Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
334516 – Analytical Laboratory Instrument Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
334419 – Other Electronic Component Manufacturing
336411 – Aircraft Manufacturing

Description
Maintenance, Repair and Rebuilding of Equipment: Maintenance and Repair Shop Equipment

Possible NAICS Codes
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
811210 – Electronic and Precision Equipment Repair and Maintenance
561210 – Facilities Support Services
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing
238290 – Other Building Equipment Contractors
334290 – Other Communications Equipment Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
238220 – Plumbing, Heating, and Air-Conditioning Contractors

Includes
Anesthesia Apparatus; Blood Transfusion Apparatus; Oxygen Therapy Apparatus; Respirators; Orthopedic Supplies; Arch Supports; Clinical Thermometers; Sutures; Hearing Aids; Veterinary Equipment, Endoscopes, Fiber Optic.

Excludes
Ophthalmic Instruments, Equipment, and Supplies; Non-Medical Endoscopes.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339113 – Surgical Appliance and Supplies Manufacturing
325411 – Medicinal and Botanical Manufacturing
339112 – Surgical and Medical Instrument Manufacturing

Description
Foundry Machinery, Related Equipment and Supplies.

Includes
Molding Machines; Tumbling Mills, Foundry Dextrine; Core Paste.

Excludes
Crucible Furnaces; Cupola Furnaces; Foundry Hand Tools.

Possible NAICS Codes
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
333994 – Industrial Process Furnace and Oven Manufacturing
327999 – All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
332996 – Fabricated Pipe and Pipe Fitting Manufacturing
212321 – Construction Sand and Gravel Mining
327910 – Abrasive Product Manufacturing
331529 – Other Nonferrous Metal Foundries (except Die-Casting)
333248 – All Other Industrial Machinery Manufacturing
331511 – Iron Foundries
331513 – Steel Foundries (except Investment)

Includes
Manicure Tables

Possible NAICS Codes
335210 – Small Electrical Appliance Manufacturing
333924 – Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
325211 – Plastics Material and Resin Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing
561990 – All Other Support Services
513210 – Software Publishers
334111 – Electronic Computer Manufacturing
541519 – Other Computer Related Services
811210 – Electronic and Precision Equipment Repair and Maintenance

Includes
Thermometers, including Engine Thermometers; Pressure Gages; Thermocouple Leads; Resistance Bulbs.

Excludes
Clinical Thermometers; (FSC 6515); Thermostatic and Differential Pressure Switches (FSC 5930); and Meteorological Instruments (FSC 6660).

Possible NAICS Codes
334519 – Other Measuring and Controlling Device Manufacturing
334513 – Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
334512 – Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing

Includes
Sleeve Bearings; Split Bearings; Washer Type Bearings; Jewel Bearings.

Excludes
Antifriction Bearings (FSC 3110); Mounted Bearings (FSC 3130).

Notes
Bearings in this class are generally one piece that retain and position moving and/or rotating parts. They may have lubrication grooves/fitting/facilities or include pre-lubrication.

Possible NAICS Codes
332991 – Ball and Roller Bearing Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
332510 – Hardware Manufacturing
332111 – Iron and Steel Forging
336390 – Other Motor Vehicle Parts Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
213113 – Support Activities for Coal Mining
332721 – Precision Turned Product Manufacturing