Analysis
HTS 8431.42.00 covers bulldozer or angledozer blades under heading 8431 (parts suitable for use solely or principally with the machinery of headings 8425 to 8430).
Goods from countries without normal trade relations pay the column 2 rate of 35% instead of nothing, so origin decides between free entry and a 35% duty.
The normal trade relations rate here is zero, shared by about 61% of the 823 tariff lines in chapter 84, a useful check when a neighbouring dutiable line is a candidate. Chapter 99 measures such as Section 301 or 232 can still apply on top, depending on where the goods come from.
Census statistics map these goods to NAICS 333120 (Construction Machinery Manufacturing), an industry of 651 US establishments employing 64,700 people. That concordance is how imports of this line are compared with US output.
All 9 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 8431.10.00 | Of machinery of heading 8425 | Free |
| 8431.20.00 | Of machinery of heading 8427 | Free |
| 8431.31.00 | Of passenger or freight elevators other than continuous action, skip hoists or escalators | Free |
| 8431.39.00 | Of machinery of heading 8428: other | Free |
| 8431.41.00 | Buckets, shovels, grabs and grips | Free |
| 8431.43.40 | Of offshore oil and natural gas drilling and production platforms | Free |
| 8431.43.80 | Parts for boring or sinking machinery of subheading 8430.41 or 8430.49: other | Free |
| 8431.49.10 | Of machinery of heading 8426 | Free |
| 8431.49.90 | Other: other | Free |