| SIC code | SIC Text
| NAICS code | NAICS Text
|
| 0213 | Hogs | 112210 | Hog and Pig Farming |
| 0272 | Horses and Other Equines | 112920 | Horse and Other Equine Production |
| 0971 | Hunting and Trapping, and Game Propagation | 114210 | Hunting and Trapping |
| 1611 | Highway and Street Construction, Except Elevated Highways | 234110 | Highway and Street Construction |
| 1629 | Heavy Construction, NEC (industrial nonbuilding structures construction) | 234930 | Industrial Nonbuilding Structure Construction |
| 1629 | Heavy Construction, NEC (nonbuilding structures except industrial construction) | 234990 | All Other Heavy Construction |
| 2252 | Hosiery, NEC (dyeing and finishing only) | 313312 | Textile and Fabric Finishing (except Broadwoven Fabric) Mills |
| 2392 | Housefurnishings, Except Curtains and Draperies (except mops and bags) | 314129 | Other Household Textile Product Mills |
| 2392 | Housefurnishings, Except Curtains and Draperies (blanket, laundry, and garment storage bags) | 314911 | Textile Bag Mills |
| 2392 | Housefurnishings, Except Curtains and Draperies (dust rags) | 314999 | All Other Miscellaneous Textile Product Mills |
| 2252 | Hosiery, NEC (girls' hosiery except dyeing and finishing only) | 315111 | Sheer Hosiery Mills |
| 2252 | Hosiery, NEC (socks except dyeing and finishing only) | 315119 | Other Hosiery and Sock Mills |
| 2353 | Hats, Caps, and Millinery (men's and boys' contractors) | 315211 | Men's and Boys' Cut and Sew Apparel Contractors |
| 2353 | Hats, Caps, and Millinery (women's, girls', and infants' contractors) | 315212 | Women's, Girls', and Infants' Cut and Sew Apparel Contractors |
| 2353 | Hats, Caps, and Millinery (except contractors) | 315991 | Hat, Cap, and Millinery Manufacturing |
| 3142 | House Slippers | 316212 | House Slipper Manufacturing |
| 2426 | Hardwood Dimension and Flooring Mills (hardwood dimension from logs and bolts) | 321113 | Sawmills |
| 2435 | Hardwood Veneer and Plywood | 321211 | Hardwood Veneer and Plywood Manufacturing |
| 2426 | Hardwood Dimension and Flooring Mills (except flooring) | 321912 | Cut Stock, Resawing Lumber, and Planing |
| 2426 | Hardwood Dimension and Flooring Mills (hardwood flooring) | 321918 | Other Millwork (including Flooring) |
| 3423 | Hand and Edge Tools, Except Machine Tools and Handsaws | 332212 | Hand and Edge Tool Manufacturing |
| 3429 | Hardware, NEC (vacuum and insulated bottles, jugs, and chests) | 332439 | Other Metal Container Manufacturing |
| 3429 | Hardware, NEC (other hardware) | 332510 | Hardware Manufacturing |
| 3429 | Hardware, NEC (turnbuckles and hose clamps) | 332722 | Bolt, Nut, Screw, Rivet, and Washer Manufacturing |
| 3429 | Hardware, NEC (fire hose nozzles and couplings) | 332919 | Other Metal Valve and Pipe Fitting Manufacturing |
| 3429 | Hardware, NEC (fireplace fixtures, traps, handcuffs and leg irons, ladder jacks, and other like metal pro | 332999 | All Other Miscellaneous Fabricated Metal Product Manufacturing |
| 3639 | Household Appliances, NEC (household sewing machines) | 333298 | All Other Industrial Machinery Manufacturing |
| 3433 | Heating Equipment, Except Electric and Warm Air Furnaces | 333414 | Heating Equipment (except Warm Air Furnaces) Manufacturing |
| 3651 | Household Audio and Video Equipment | 334310 | Audio and Video Equipment Manufacturing |
| 3635 | Household Vacuum Cleaners | 335212 | Household Vacuum Cleaner Manufacturing |
| 3639 | Household Appliances, NEC (floor waxing and floor polishing machines) | 335212 | Household Vacuum Cleaner Manufacturing |
| 3631 | Household Cooking Equipment | 335221 | Household Cooking Appliance Manufacturing |
| 3632 | Household Refrigerators and Home and Farm Freezers | 335222 | Household Refrigerator and Home Freezer Manufacturing |
| 3633 | Household Laundry Equipment | 335224 | Household Laundry Equipment Manufacturing |
| 3639 | Household Appliances, NEC (except floor waxing and floor polishing machines, and household sewing machine | 335228 | Other Major Household Appliance Manufacturing |
| 3429 | Hardware, NEC (luggage and utility racks) | 336399 | All Other Motor Vehicle Parts Manufacturing |
| 2519 | Household Furniture, NEC | 337125 | Household Furniture (except Wood and Metal) Manufacturing |
| 2426 | Hardwood Dimension and Flooring Mills (wood furniture frames and finished furniture parts) | 337215 | Showcase, Partition, Shelving, and Locker Manufacturing |
| 3429 | Hardware, NEC (convertible bed sleeper mechanisms, chair glides) | 337215 | Showcase, Partition, Shelving, and Locker Manufacturing |
| 2392 | Housefurnishings, Except Curtains and Draperies (mops, floor and dust) | 339994 | Broom, Brush, and Mop Manufacturing |
| 5023 | Homefurnishings (except homefurnishings sold via retail method) | 421220 | Home Furnishing Wholesalers |
| 5072 | Hardware (except sold via retail method) | 421710 | Hardware Wholesalers |
| 5023 | Homefurnishings (Wholesale) (floor covering sold via retail method) | 442210 | Floor Covering Stores |
| 5722 | Household Appliance Stores | 443111 | Household Appliance Stores |
| 5072 | Hardware (sold via retail method) | 444130 | Hardware Stores |
| 5251 | Hardware Stores | 444130 | Hardware Stores |
| 5945 | Hobby, Toy, and Game Stores | 451120 | Hobby, Toy, and Game Stores |
| 6324 | Hospital and Medical Service Plans (health and medical insurers-direct) | 524114 | Direct Health and Medical Insurance Carriers |
| 6324 | Hospital and Medical Service Plans (reinsurers) | 524130 | Reinsurance Carriers |
| 6324 | Hospital and Medical Service Plans (self insurers) | 525190 | Other Insurance Funds |
| 7353 | Heavy Construction Equipment Rental and Leasing (without operators) | 532412 | Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing |
| 8099 | Health and Allied Services, NEC (medical artists) | 541430 | Graphic Design Services |
| 8099 | Health and Allied Services, NEC (medical photography) | 541922 | Commercial Photography |
| 7363 | Help Supply Services (except employee leasing service) | 561320 | Temporary Help Services |
| 7363 | Help Supply Services (except temporary help service) | 561330 | Employee Leasing Services |
| 8099 | Health and Allied Services, NEC (childbirth preparation) | 621410 | Family Planning Centers |
| 8082 | Home Health Care Services | 621610 | Home Health Care Services |
| 8099 | Health and Allied Services, NEC (blood and organ banks) | 621991 | Blood and Organ Banks |
| 8099 | Health and Allied Services, NEC (except blood and organ banks, medical artists, medical photography, and | 621999 | All Other Miscellaneous Ambulatory Health Care Services |
| 7011 | Hotels and Motels (hotels and motels, except casino hotels) | 721110 | Hotels (except Casino Hotels) and Motels |
| 7011 | Hotels and Motels (casino hotels) | 721120 | Casino Hotels |
| 7011 | Hotels and Motels (bed and breakfast inns) | 721191 | Bed-and-Breakfast Inns |
| 7011 | Hotels and Motels (except hotels, motels, and bed and breakfast inns) | 721199 | All Other Traveler Accommodation |
