HS chapter 84, all origins, from official duty receipts. Burden 0.5% in 2017-06 → peak 8.5% in 2025-09 → 4.1% in 2026-06, on $3.1B of duty in the latest month.
What America imports in machinery & mechanical appliances · the whole tariff story · any origin: tariff_burden(origin: "Vietnam", commodity: "84") · any code: tariff_lookup(hs, origin) via /connect. Not customs or legal advice.