Importers of HS 8412.21 (linear acting (cylinders)) from Korea, South actually paid 23.06% on the taxed portion of the value in 2026-06 — 23.02% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is Free. Over the window the rate on the taxed portion moved null% → 23.06%, with the largest single step -11.9pp in 2025-12. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is Free — importers actually paid 23.06%, so the trade-war overlay added 23.1 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8412.21", origin: "Korea, South") · see it at trimtabist.com/tariffs
HS 8412.21. The schedule base rate is Free; importers from South Korea actually paid 23.06% on the dutiable value in 2026-06 — the trade-war overlay added 23.1 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved % (2023-07) → 23.06% (2026-06), largest single step -11.9pp in 2025-12.
Korea, South's lower duty (23.02% vs 48.54%) lets it price up to 20.7% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $5.18/kg vs $6.84/kg (duty in, freight out).
All goods from South Korea · the whole tariff ledger · 1 CBP ruling cite this code · reproduce: tariff_story(hs: "8412.21", origin: "South Korea") via /connect. Not customs or legal advice.