Importers of HS 7318.15 (having shanks or threads with a diameter of less than 6 mm) from Thailand actually paid 55.57% on the taxed portion of the value in 2026-06 — 55.51% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 6.2%. Over the window the rate on the taxed portion moved 8.43% → 55.57%, with the largest single step +17.7pp in 2025-06. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 6.2% — importers actually paid 55.57%, so the trade-war overlay added 49.4 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "7318.15", origin: "Thailand") · see it at trimtabist.com/tariffs
HS 7318.15. The schedule base rate is 6.2%; importers from Thailand actually paid 55.57% on the dutiable value in 2026-06 — the trade-war overlay added 49.4 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 8.43% (2023-07) → 55.57% (2026-06), largest single step +17.7pp in 2025-06.
Thailand's lower duty (55.51% vs 77.06%) lets it price up to 13.9% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $2.66/kg vs $4/kg (duty in, freight out).
15 Chapter-99 measures name Thailand; scope mapping is partial (several annexes are PDFs) — absence never means exemption. They do not sum, and some are product-specific — the collected rate above is the composed truth.
All goods from Thailand · the whole tariff ledger · 13 CBP rulings cite this code · reproduce: tariff_story(hs: "7318.15", origin: "Thailand") via /connect. Not customs or legal advice.