U.S. imports of Parts and Accessories for Surveying, Hydrographic, Geophysical & Related Instruments (HS 901590) totaled $25.0M in August 2026, imported from 57 countries.
Importers of Parts and Accessories for Surveying, Hydrographic, Geophysical & Related Instruments paid $2.4M in duties in August 2026, an average duty rate of 9.60% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataReplacement and aftermarket components for the full range of Chapter 90 surveying and geophysical instruments — from rangefinder optics to seismograph transducers — are classified here, with the US schedule providing dedicated 10-digit lines for parts of rangefinders (9015900110), theodolites and tachymeters (9015900120), surveying levels (9015900130), photogrammetrical apparatus (9015900140), seismographs (9015900150), and other geophysical instruments (9015900160). Canada and Mexico are the leading suppliers, reflecting cross-border supply chains for precision instrument components in North America. Correct parts classification requires matching the component to the parent instrument's heading, as misclassification between lines can affect duty liability and statistical reporting.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.9K import shipments a month
If the optical assembly is designed and marketed specifically for use in theodolites or tachymeters, it should be classified under the dedicated parts line for those instruments (9015900120) rather than as a standalone optical component under Chapter 90's optical headings. The key test is whether the part is identifiable as suitable for use solely or principally with the parent instrument. When an assembly could serve multiple instrument types, the importer should seek a binding ruling from CBP.
Mexico is a leading supplier of parts under this heading, and goods originating in Mexico may qualify for preferential tariff treatment under USMCA, provided they meet the applicable rules of origin — including any required regional value content or tariff classification change. Importers must obtain and retain a valid USMCA certification of origin and ensure the parts genuinely originate in Mexico rather than merely transiting through it.
Subheading 3 of 6 in heading 9015
Subheading 901590 · $25.0M of $120.4M
ImportsExports
Imports
$25.0MYoY · free account
Exports
$24.9MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $294.6M of Parts and Accessories for Surveying, Hydrographic, Geophysical & Related Instruments and exported $338.3M.
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 |
|---|---|---|---|---|---|
| 9015900160 | Parts & Accessorie of Oth Geophysical Inst & Appln | $9.8M | 8.13% | 63.10% | $794K |
| 9015900190 | Pts for Surveying Inst & Appln, Exc Compasses, NESOI | $8.0M | 11.58% | 89.10% | $930K |
| 9015900110 | Parts and Accessories of Ranefinders | $5.8M | 8.16% | 41.47% | $471K |
| 9015900120 | Pts and Accessories of Theodolites and Tachymeters | $969K | 13.34% | 89.72% | $129K |
| 9015900130 | Parts and Accessories of Surveying Levels | $375K | 14.12% | 100.00% | $53K |
| 9015900140 | Pts of Photogrammetrical Surveying Inst& Apparatus | $303K | 14.95% | 100.00% | $45K |
| 9015900150 | Parts and Accessories of Seismographs | $29K | 5.64% | 56.43% | $2K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9015900100 | Parts and Accessories for Surveying | $24.9M |
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
China pays 37.4% duty; Mexico 0.6%.
customs district
destination
entry
rate provision · imports
18.2% enters free of duty; duty collected equals 9.60% of imports for consumption.