HTS 8421: Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof
Heading 8421 of the Harmonized Tariff Schedule of the United States has 24 ten-digit statistical numbers. A US entry line in ACE needs the full ten digits, with the quantity in No. or kg.
Check additional duties before you file
- If the goods are made in China, check Section 301 duties under HTSUS heading 9903.88, on top of the general rate, and any exclusions.
| HTSUS number | Description | Unit | General rate |
|---|---|---|---|
| Centrifuges, including centrifugal dryers: | |||
| 8421.11.00.00 | Cream separators | No. | Free |
| 8421.12.00.00 | Clothes-dryers | No. | Free |
| 8421.19.00.00 | Other | No. | 1.3% |
| Filtering or purifying machinery and apparatus for liquids: | |||
| 8421.21.00.00 | For filtering or purifying water | No. | Free |
| 8421.22.00.00 | For filtering or purifying beverages other than water | No. | Free |
| 8421.23.00.00 | Oil or fuel filters for internal combustion engines | No. | 2.5% |
| 8421.29.00 | Other | Free | |
| 8421.29.00.05 | Refrigerant recovery and recycling units | No. | |
| Other: | |||
| 8421.29.00.15 | Oil-separation equipment | No. | |
| Other: | |||
| 8421.29.00.40 | Hydraulic fluid power filters, rated at 1,000 kPa or greater | No. | |
| 8421.29.00.65 | Other | No. | |
| Filtering or purifying machinery and apparatus for gases: | |||
| 8421.31.00.00 | Intake air filters for internal combustion engines | No. | 2.5% |
| 8421.32.00.00 | Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines | No. | Free |
| 8421.39.01 | Other | Free | |
| Dust collection and air purification equipment: | |||
| 8421.39.01.05 | For machine tools of headings 8456 through 8465, inclusive | kg | |
| 8421.39.01.15 | Other | kg | |
| Other: | |||
| Industrial gas cleaning equipment: | |||
| 8421.39.01.20 | Electrostatic precipitators | No. | |
| 8421.39.01.30 | Other | No. | |
| 8421.39.01.40 | Gas separation equipment | No. | |
| Other: | |||
| 8421.39.01.60 | Pneumatic fluid power filters, rated at 550 kPa or greater | No. | |
| 8421.39.01.90 | Other | kg | |
| Parts: | |||
| 8421.91 | Of centrifuges, including centrifugal dryers: | ||
| 8421.91.20.00 | Drying chambers for the clothes-dryers of subheading 8421.12 and other parts of clothes-dryers incorporating drying chambers | No. | Free |
| 8421.91.40.00 | Furniture designed to receive the clothes-dryers of subheading 8421.12 | No. | Free |
| 8421.91.60.00 | Other | kg | Free |
| 8421.99.01 | Other | Free | |
| 8421.99.01.40 | Parts of machinery and apparatus for filtering or purifying water | kg | |
| 8421.99.01.80 | Other | kg |
Common paperwork mistakes with heading 8421
- The invoice shows the exporter's own code. Only the first six digits are shared worldwide; the US number has ten. Check every line against the list above.
- The quantity is in the wrong unit. These lines report quantity in No. or kg, which may not match the invoice's cartons, sets or pieces.
- The packing list and the bill of lading disagree on cartons or gross weight, which can lead to holds and exams.
- The manufacturer's name and address are missing, so the MID cannot be built from the documents.
Look up any ten-digit number, or read the guide to invoice and packing list mismatches.
Check the whole shipment, not one number
FreightProof reads the invoice, packing list and bill of lading together, validates every HTS number and container, builds the MIDs and flags what does not match — in about two minutes.
Data: Harmonized Tariff Schedule of the United States, US International Trade Commission. Rates are for information only.