Section XVI · Nuclear reactors, boilers, machinery and mechanical appliances; parts
8423.20
Scales for continuous weighing of goods on conveyors:
Chapter
Nuclear reactors, boilers, machinery and mechanical appliances; parts
Heading
The product family within the chapter
Subheading
The specific good, identical worldwide
The first six digits are the same in every country that uses the Harmonized System. The United States adds two more for the tariff rate and, often, two more for statistics — which is why the rates below are listed against 8- and 10-digit numbers rather than against this code.
How the schedule reaches this code
- 84Nuclear reactors, boilers, machinery and mechanical appliances; parts
- 8423Weighing machinery (excluding balances of a sensitivity of 5 cg or better), including weight-operated counting or checking machines; weighing machine weights of all kinds; parts of weighing machinery:
- Scales for continuous weighing of goods on conveyors:
Published US duty rates
Duty is set at the 8- or 10-digit line, not at this 6-digit subheading, so more than one rate can sit under this code.
- 8423.20.10.00Using electronic means for gauging weightsNo.
- General
- Free
- Special (FTA)
- —
- Column 2
- 45%
No preferential rate published.
Countries without normal trade relations.
- 8423.20.90.00OtherNo.
- General
- 2.9%
- Special (FTA)
- Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 45%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
Schedule footnotes
- See 9903.88.01.
A reference to Chapter 99 means an additional action — a Section 232 or 301 measure, an exclusion, or a quota — applies on top of the rate above.
This is the listed rate. Antidumping and countervailing duty orders, Chapter 99 actions and preference qualification all change what is actually collected, and classification is a judgement about your goods. Verify with your licensed customs broker before you file.
Other subheadings in heading 8423
- 8423.10Personal weighing machines, including baby scales; household scales
- 8423.30Constant-weight scales and scales for discharging a predetermined weight of material into a bag or container, including hopper scales
- 8423.81Having a maximum weighing capacity not exceeding 30 kg
- 8423.82Having a maximum weighing capacity exceeding 30 kg but not exceeding 5,000 kg
- 8423.89Other:
- 8423.90Weighing machine weights of all kinds; parts of weighing machinery:
Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 12, released 2026-07-21, published at hts.usitc.gov. A U.S. Government work in the public domain.