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HSChapter 84
U.S. imports of self-propelled boring or sinking machinery (nesoi) (HS 843041) totaled $51.1M in April 2026, traded with 17 countries.
Importers of Self-Propelled Boring or Sinking Machinery (NESOI) paid $3.5M in duties in April 2026 — an effective duty rate of 7.7% on $45.6M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataSelf-propelled boring and sinking machines classified here are integrated units that combine mobility with drilling or shaft-sinking capability, used across mining, tunneling, and geotechnical construction. Italy and Sweden are the leading US suppliers under this heading, reflecting European dominance in high-specification underground and surface drilling equipment. The single US tariff line 8430410000 captures the full range of self-propelled configurations not covered by more specific headings, making correct classification against related self-propelled machinery headings a routine challenge for importers. Units subject to Section 301 measures from certain origins should be verified at the time of entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The key classification test is whether the machine is self-propelled and falls outside more specific HS headings (e.g., rotary drilling rigs for oil and gas). Importers should document the machine's propulsion system, intended application, and any integrated drilling mechanism to support the 8430410000 classification and avoid reclassification into adjacent headings.
Both countries host major manufacturers of specialized underground and surface drilling equipment, particularly for mining and civil tunneling applications. Their products often meet stringent performance and safety specifications demanded by US contractors, giving them a strong foothold in this technically demanding segment.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8430410000 | BORING OR SINKING MACHINERY, SELF-PROPELLED | $51.1M | 7.65% | $3.5M |
BORING OR SINKING MACHINERY, SELF-PROPELLED
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8430410000 | BORING OR SINKING MACHINERY, SELF-PROPELLED | $51.8M |
BORING OR SINKING MACHINERY, SELF-PROPELLED
384 no
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $6.5M | $19.1M | +$12.7M |
| Florida | $752K | $11.8M | +$11.1M |
| Massachusetts | $8.6M | $400K | -$8.2M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BALTIMORE, MD | $13.9M | $2.0M | -$11.9M |
| NEWARK, NJ | $10.3M | $4.1M | -$6.2M |
| BRUNSWICK, GA | $2.3M | $11.4M | +$9.0M |