Analysis
Subheading 3916.90 covers of other plastics, within heading 3916. The first six digits are shared by every country that uses the Harmonized System, so this part of the code is the same in the US, UK and EU schedules; the 4 US tariff lines below it are national.
None of its 4 lines is duty-free at the general rate. Rates run from 3.1% to 6.5% with a median of 6.15%, so the line you choose sets the duty.
The US splits it as follows: 3916.90.10 for of acrylic polymers (6.5%), 3916.90.20 for other: racket strings (3.1%), 3916.90.30 for other: monofilament (6.5%) and 3916.90.50 for other: other (5.8%).
By Census's concordance, most of its statistical lines are made by Unlaminated Plastics Profile Shape Manufacturing (326121) and Sporting and Athletic Goods Manufacturing (339920). Those are the NAICS industries a US producer of these goods would report under.
Goods only reach 3916.90 once they fall within heading 3916 (monofilament of which any cross-sectional dimension exceeds 1 mm, rods, sticks and…). Under General Rule 6, subheadings are then compared only with others at the same level, so a product is matched against its siblings, not against lines elsewhere in the chapter.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 3916.90.10 | Of acrylic polymers | 6.5% |
| 3916.90.20 | Other: racket strings | 3.1% |
| 3916.90.30 | Other: monofilament | 6.5% |
| 3916.90.50 | Other: other | 5.8% |