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U.S. imports of honing or lapping machines for removing metal (HS 846040) totaled $1.6M in July 2026, traded with 19 countries.
Importers of Honing or Lapping Machines for Removing Metal paid $271K in duties in July 2026 — an effective duty rate of 17% on $1.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Honing or Lapping Machines for Removing Metal imports of $1.6M in July 2026 ran 29% below the year-to-date monthly average of $2.2M.
Last updated: July 2026 dataHoning and lapping machines achieve surface finishes and dimensional tolerances beyond what conventional grinding can deliver — honing is widely used for engine cylinder bores and hydraulic components, while lapping produces the ultra-flat surfaces required in semiconductor and optical manufacturing. Germany and Italy are the leading US import sources, supplying both high-volume automotive honing lines and precision lapping systems. The US schedule provides nine 10-digit lines distinguishing NC from non-NC machines, new from used, and value tiers below and above $3,025, making correct classification dependent on three simultaneous criteria. Importers should retain manufacturer specifications confirming the process type (honing vs. lapping vs. grinding) since the distinction is not always self-evident from machine appearance.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
31 shipments/mo
Honing uses abrasive stones or sticks in a reciprocating and rotating motion to correct bore geometry and improve surface finish, while grinding uses a rotating abrasive wheel to remove larger amounts of material. The process distinction is recognized in the tariff schedule: honing and lapping machines are classified under 846040, separate from grinding machines under 8460. Manufacturer documentation describing the process, tooling type, and typical stock removal rates is the standard supporting evidence.
Working through the criteria in order: the machine is not numerically controlled, so it falls to the non-NC lines; it is new, eliminating the used line; and its value exceeds $3,025, pointing to 8460408080. Importers should document each criterion — NC status from manufacturer specs, condition from the commercial invoice, and value from the declared customs value — to support the classification in the event of a CBP inquiry.
HSChapter 84
Subheading 8 of 10 in heading 8460
Subheading 846040 · $1.6M of $50.5M
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ImportsExports
Imports
$1.6MYoY · Pro
Exports
$1.7MYoY · Pro
12-mo low · imports
YoY · ProThrough 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 |
|---|---|---|---|---|---|
| 8460404060 | Honing/Lapping Mach,Mtl Remov, N/C, Ov $3,025, New | $881K | 19.64% | 100.00% | $173K |
| 8460408080 | Honing/Lapp Mach,Exc Num Cntrd,New,Gt $3025 Each | $501K | 14.18% | 100.00% | $71K |
| 8460404010 | Honing or Lapping Machines,Numerical Contrld, Used | $160K | 14.40% | 100.00% | $23K |
| 8460408020 | Honing or Lapping Mach,Mtl Remov,Under $3,025, New | $9K | 39.40% | 100.00% | $4K |
| 8460408010 | Honing or Lapping Machines,Exep Numer Contrld,Used | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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
Italy and France together supply 77% of it.
customs district
destination
entry
rate provision · imports
the effective duty rate is 17.45%.