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U.S. exports of parts and accessories for drawing, marking-out, calculating & length measuring instruments (HS 901790) totaled $844K in July 2026.
Parts and Accessories for Drawing, Marking-Out, Calculating & Length Measuring Instruments imports of $47K in July 2026 ran 64% below the year-to-date monthly average of $131K.
Last updated: July 2026 dataReplacement parts and accessories for the full suite of Chapter 90.17 instruments — from plotter components to caliper jaws and tape measure housings — are classified here, with the US schedule providing parent-instrument-specific lines that mirror the structure of the complete-instrument subheadings. Thailand is the leading import source, followed by China and Germany, a mix that reflects both the Southeast Asian manufacturing base for consumer-grade tool components and European sourcing for precision metrology parts. Correct classification requires identifying the parent instrument to which the part belongs, as each 10-digit line is keyed to a specific subheading of 9017.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
8 shipments/mo
Each 10-digit line under 9017900000 is keyed to a specific parent subheading — for example, parts of articles of subheading 9017.30.40 (micrometers and calipers) versus parts of articles of subheading 9017.30.80 (gauges). The importer must first classify the complete instrument, then select the corresponding parts line. When a component is compatible with instruments across multiple subheadings, classification follows the subheading of the instrument for which the part is principally designed. Technical documentation and manufacturer specifications are the primary evidence.
Yes, parts and accessories originating in China that are classified under this heading are generally subject to Section 301 tariffs. China is a significant supplier of components for consumer-grade measuring tools, and importers should factor the additional duty into landed-cost analysis. Thailand, the leading supplier, is not subject to Section 301 measures, which has contributed to its prominence in this parts category.
HSChapter 90
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Subheading 5 of 5 in heading 9017
Subheading 901790 · $47K of $32.5M
Exports · July 2026
destination
Mexico and Canada together take 59% of it.
customs district
origin
entry
rate provision · imports
77.0% enters free of duty; the effective duty rate is 1.22%.
ImportsExports
Imports
$47KYoY · Pro
Exports
$844KYoY · 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 |
|---|---|---|---|---|---|
| 9017900160 | Parts & Accessories of Drawing, Marking-Out Or.... | $27K | 2.08% | 39.31% | $572 |
| 9017900120 | Pts & Accessories of Articles of Subhdg 9017.20.40 | $16K | 0.00% | 0.00% | -- |
| 9017900140 | Pts & Accessories of Articles of Subhdg 9017.30.40 | $3K | 0.00% | 0.00% | -- |
| 9017900105 | Parts & Accessories of Artcls of Subhdg 9017.10.40 | $0 | -- | -- | -- |
| 9017900150 | Pts & Accessories of Articles of Subhdg 9017.30.80 | $0 | -- | -- | -- |
| 9017900136 | Pts & Accessories of Articles of Subhdg 9017.20.80 | $0 | -- | -- | -- |
| 9017900115 | Parts & Accessories of Artcls of Subhdg 9017.10.80 | $0 | -- | -- | -- |
| 9017900132 | Pts & Accessories of Articles of Subhdg 9017.20.70 | $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.