U.S. imports of Parts & Accessories for Stone, Ceramic & Glass Working Machine Tools (Heading 8464) (HS 846691) totaled $7.4M in August 2026, imported from 45 countries.
Importers of Parts & Accessories for Stone, Ceramic & Glass Working Machine Tools (Heading 8464) paid $939K in duties in August 2026, an average duty rate of 12.67% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataReplacement and aftermarket parts for machine tools that work stone, ceramics, concrete, asbestos-cement, and cold-worked glass enter under this subheading, with the US schedule distinguishing cast-iron parts (8466911000) from other parts (8466915000) and a legacy catch-all line (8466910000). Italy and Germany lead US supply, reflecting the concentration of stone-processing and ceramic-tile machinery manufacturing in those countries. Because asbestos-cement is explicitly referenced in the heading's scope, importers of parts for legacy equipment should be aware that EPA regulations govern asbestos-containing articles separately from customs classification. China is also a notable supplier, and those goods are subject to Section 301 tariffs.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
792 import shipments a month
Cast iron is singled out because it is a distinct material with its own duty treatment in many machine-tool parts categories. Beds, columns, and housings are frequently cast iron, while spindles, slides, and precision components are typically steel or other materials. Correctly identifying the material composition of each part is essential to selecting the right 10-digit line.
The wire saw itself (the cutting element) would typically classify as a tool or abrasive article under a different heading, while the machine frame, drive components, and structural parts of the saw machine would fall under 8466.91 as parts for heading 8464 machines. The distinction between the consumable cutting element and the durable machine part is the key classification boundary.
Subheading 7 of 7 in heading 8466
Subheading 846691 · $7.4M of $342.0M
ImportsExports
Imports
$7.4MYoY · free account
Exports
$8.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $82.4M of Parts & Accessories for Stone, Ceramic & Glass Working Machine Tools (Heading 8464) and exported $264.5M.
Through August 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 | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8466915000 | Parts for Machines of Heading 8464, NESOI | $7.3M | 12.47% | 89.43% | $911K |
| 8466911000 | Cas-Iron Parts for Machines of Heading 8464 | $106K | 26.52% | 96.81% | $28K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8466910000 | Parts for Machines of Heading 8464 | $8.3M |
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.
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Imports · August 2026
origin
Bulgaria and Italy together supply 47% of it. China pays 37.3% duty; Mexico 0.4%.
customs district
destination
entry
rate provision · imports
10.4% enters free of duty; duty collected equals 12.67% of imports for consumption.