HS Code for Spark Plug Gauge (US)
PRIMARY CLASSIFICATION RESULT (US)
The primary 6-digit Harmonized System (HS) code for spark plug gauge is 9031.80 (Other instruments, appliances and machines). Under the 2026 US HTS, representative general duties are Free [Official Source].
Classification guidance note.
Candidate Subheadings & Disambiguation Matrix
| HS Subheading | WCO Subheading Description | Disambiguation Rule / Notes | Action |
|---|---|---|---|
| 9031.80 | Other instruments, appliances and machines | Other instruments, appliances and machines | View 9031.80 → |
Official Primary Sources & Authority References
USITC HTS Database ↗
USITC official Harmonized Tariff Schedule for Spark Plug Gauge.
CBP CROSS Rulings ↗
CBP e-Rulings database for Spark Plug Gauge classification precedents.
WCO Nomenclature ↗
World Customs Organization international 6-digit Harmonized System standard.
Spark Plug Gauge Frequently Asked Questions (FAQ)
What is the official 6-digit HS code for Spark Plug Gauge?
The primary 6-digit Harmonized System (HS) code for Spark Plug Gauge is HS 9031.80 (Other instruments, appliances and machines).
What is the US general import duty for Spark Plug Gauge?
Under the 2026 US HTS, representative MFN general duty rates for Spark Plug Gauge under HS 9031.80 are Free.
Are there alternative candidate subheadings for Spark Plug Gauge?
Yes. Depending on state (green vs. roasted, decaffeinated vs. non-decaffeinated, raw vs. processed), alternative subheadings include 903180.
What mandatory import documents are required for Spark Plug Gauge?
Commercial Invoice, Packing List, Bill of Lading, and Partner Government Agency permits where applicable.
Does de minimis duty-free exemption apply to Spark Plug Gauge?
Eligible shipments enter duty-free under statutory destination thresholds.
How are merchandise processing and customs fees calculated for Spark Plug Gauge?
Import fees are assessed on entered customs value under destination regulations.