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U.S. imports of base metal fittings for looseleaf binders or files (HS 830510) totaled $402K in July 2026, traded with 7 countries.
Importers of Base Metal Fittings for Looseleaf Binders or Files paid $83K in duties in July 2026 — an effective duty rate of 21% on $392K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataRing binder mechanisms and other looseleaf fittings of base metal are a core input for the stationery and office-products manufacturing sector, and the US tariff schedule distinguishes ring binder mechanisms (8305100010) from other looseleaf fittings (8305100050), a split that matters for duty and Section 301 exposure on Chinese-origin goods. China is the dominant supplier, with South Korea and Hungary as notable secondary sources. Importers should verify whether finished binder assemblies versus bare mechanisms are being imported, as the classification boundary can affect both duty rate and admissibility.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
35 shipments/mo
HTS 8305100010 covers ring binder mechanisms specifically — the metal spine-and-ring assemblies that open and close to hold looseleaf pages. HTS 8305100050 covers other fittings for looseleaf binders and files not elsewhere specified, such as prong fasteners or spine clips. Correct classification depends on the mechanism's design and function.
The United States does not have a free trade agreement with the European Union, so Hungarian-origin binder fittings do not benefit from preferential duty rates. Normal trade relations (NTR/MFN) rates apply, and importers should confirm the applicable column 1 rate with a customs broker.
HSChapter 83
Subheading 3 of 3 in heading 8305
Subheading 830510 · $402K of $11.5M
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ImportsExports
Imports
$402KYoY · Pro
Exports
$346KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8305100010 | Ring Binder Mechanisms for Loosleaf Bndrs, Bs Metl | $257K | 18.58% | 96.06% | $48K |
| 8305100050 | Fittings for Looseleaf Binders, Files NESOI Bs Mtl | $146K | 24.03% | 100.00% | $35K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8305100000 | Base Metal Fittings for Looseleaf Binders or Files | $346K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · July 2026
origin
China and Korea, South together supply 100% of it.
customs district
destination
entry
rate provision · imports
the effective duty rate is 20.55%.