U.S. exports of Parts and Accessories for Drawing, Marking-Out, Calculating & Length Measuring Instruments (HS 901790) totaled $271K in August 2026.
Importers of Parts and Accessories for Drawing, Marking-Out, Calculating & Length Measuring Instruments paid $721 in duties in August 2026, an average duty rate of 0.58% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
14 import shipments a month
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.
Subheading 4 of 5 in heading 9017
Subheading 901790 · $271K of $17.1M
ImportsExports
Imports
$125KYoY · free account
Exports
$271KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $2.3M of Parts and Accessories for Drawing, Marking-Out, Calculating & Length Measuring Instruments and exported $4.5M.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
Exports · August 2026
destination
Mexico and Canada together take 73% of it.
customs district
origin
entry
rate provision · imports
89.1% enters free of duty; duty collected equals 0.58% of imports for consumption.
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 |
|---|---|---|---|---|---|
| 9017900132 | Pts & Accessories of Articles of Subhdg 9017.20.70 | $47K | 0.00% | 0.00% | -- |
| 9017900160 | Parts & Accessories of Drawing, Marking-Out Or.... | $46K | 1.56% | 29.45% | $721 |
| 9017900150 | Pts & Accessories of Articles of Subhdg 9017.30.80 | $32K | 0.00% | 0.00% | -- |
| 9017900105 | Parts & Accessories of Artcls of Subhdg 9017.10.40 | — | -- | -- | -- |
| 9017900140 | Pts & Accessories of Articles of Subhdg 9017.30.40 | — | -- | -- | -- |
| 9017900136 | Pts & Accessories of Articles of Subhdg 9017.20.80 | — | -- | -- | -- |
| 9017900115 | Parts & Accessories of Artcls of Subhdg 9017.10.80 | — | -- | -- | -- |
| 9017900120 | Pts & Accessories of Articles of Subhdg 9017.20.40 | — | -- | -- | -- |
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.
Trade Directory
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