8404.10.00—Auxiliary plant for use with boilers of heading 8402 or 8403
General duty rate
3.5%
Across 2 10-digit lines
Coverage on this page
Plain-English explanation
HTS 8404.10.00 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Auxiliary plant for use with boilers of heading 8402 or 8403. It sits in Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof, Section XVI: Machinery and Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders and Reproducers, Television Image and Sound Recorders and Reproducers, and Parts and Accessories of Such Articles and rolls up 2 10-digit statistical lines, all with a general duty rate of 3.5%. No Chapter 99 tariff modifications or AD/CVD orders currently flag any line under this tariff item in Tandom's catalog.
10-digit lines under 8404.10.00(2)
Pick a line to view full rate detail and compute landed duty
Frequently asked questions
What does HTS 8404.10.00 cover?
HTS 8404.10.00 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering Auxiliary plant for use with boilers of heading 8402 or 8403. It belongs to Chapter 84 and rolls up 2 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 8404.10.00?
Every 10-digit line under HTS 8404.10.00 carries a general (Column 1) duty rate of 3.5%. Section 301, Section 232, and AD/CVD overlays may stack on top of this rate at the per-line level — open a specific 10-digit code to see its complete tariff stack.
How do I find the right 10-digit line under HTS 8404.10.00?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader tariff item HTS 8404.10.00 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Are there AD/CVD orders affecting HTS 8404.10.00?
Learn more
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