What duty and tariff issues apply to custom hardware and fasteners?
Confidence 4/5 Established practice · review by 2026-12-31
Duty considerations for custom hardware and fasteners:
Fastener imports into the US and EU have attracted anti-dumping and countervailing duties in some categories and origins, which can exceed the base tariff by a large margin. This is a category where the duty question must be asked explicitly.
Sources
- Fastener manufacturing MOQ and tooling practice — Industry practice; varies by process and material
- Screws, bolts and nuts under HS 7318 — World Customs Organization HS nomenclature
- Anti-dumping and countervailing duty orders on fasteners — US International Trade Commission
What goes wrong with custom hardware and fasteners
- Specifying a finish by appearance instead of by standard, then getting a coating that fails in salt spray.
- Accepting a lower stainless grade without noticing.
- Not specifying thread tolerance and discovering the parts do not mate.
- Assuming standard parts are always available; Chinese "standard" dimensions sometimes follow GB rather than DIN or ANSI.
- Ignoring anti-dumping exposure on fasteners.
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