8547.90.00.10

Other insulating fittings

Insulating fittings for electrical machines, appliances or equipment, being fittings wholly of insulating material apart from any minor components of metal (for example, threaded sockets) incorporated during molding solely for the purposes of assembly, other than insulators of heading 8546; electrical conduit tubing and joints therefor, of base metal lined with insulating material: Other

Unit: No. Heading: 8547 Chapter: 85 As of August 15, 2026

Data provenance: Rates from HTS Revision 16 (Aug 15, 2026); trade measures verified against CBP CSMS and Federal Register notices through Aug 15, 2026.

Duty rates

No active duty rates published for this code.

The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.

Trade measures (Chapter 99)

No active Chapter 99 measures are linked to this code.

Rate-change history

What the rate was before, and when it changed. The government schedule replaces each revision in place; we keep the timeline.

  1. RATE_INCREASE USITC HTS Revision 2026.7

    Rate increase on 9903.82.03: 0% → 15% (Section 232 combined metals)

    See the change →
  2. SCOPE_EXPANSION Proclamation April 2, 2026 - Combined Metals

    Section 232 steel scope expanded: 523 HTS codes added under combined-metals framework

    See the change →
  3. NEW_PROGRAM Proclamation April 2, 2026 - Combined Metals

    Combined Section 232 metals framework introduced — 16 new Chapter 99 codes (9903.82.02–17)

    See the change →
  4. NEW_PROGRAM Executive Order Feb 1, 2026 — Reciprocal Tariff (FR 2026-03824)

    Section 122 reciprocal surcharge in effect — additional 10% on most imports through July 24, 2026

    See the change →

Related CBP rulings

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N306508 February 21, 2020

The tariff classification of steel conduit pipe from Thailand

As the terms of heading 8547, Harmonized Tariff Schedule of the United States (HTSUS), dictate that conduit tubing classified therein must be electrically insulating, this office finds the subject goods are described accurately within the h

N291770 November 20, 2017

The tariff classification of insulated grounding bushings and an insulated conduit bushing from China

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N291623 November 17, 2017

The tariff classification of insulated conduit tube connectors from China

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N290590 October 19, 2017

The tariff classification of insulated compression and insulated set screw connectors from China

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N289097 August 29, 2017

The tariff classification of an insulated grounding hub from China

The item concerned is an insulated electrical conduit grounding hub. This grounding hub has an inside diameter of 1.25 inches and is used to secure threaded rigid electrical conduit to type 2, 3, 3R, 4, 4X, 12, or 13 electrical enclosures.

N261815 March 10, 2015

The tariff classification of electrically insulated fitting kits from Canada

The items under consideration are referred to as Winding Insulation Kits, which consist of various sizes and shapes of compressed paperboard, (pressboard). The kit components are cut and further worked to customized specifications and are i

N252066 April 22, 2014

The tariff classification of a primary bobbin from Japan

Co. The merchandise in question is referred to as a primary bobbin. It is composed of PPS(polyphenylene sulfide), an engineering plastic, and incorporates a high voltage electrical terminal. It measures 99 mm in length, 30 mm in width and 2

N235259 December 7, 2012

The tariff classification of connector parts from China.

Amphenol Part Number ZP-7024-20A-BR is a plated aluminum coupling nut. It has an external diameter of 3 1/2 inches at its widest point, and features raised hexagonal tightening ridges on the outer surface. The inner surface of the adapter f

N217997 June 5, 2012

The tariff classification of insulating fittings from Mexico or China

The items concerned are insulating fittings used in the production of cylindrical electrical connectors. There are four models concerned, Amphenol Aerospace Part Numbers 10-825814-15P, 10-074820-22P, 3700-023-3273 and 10-825830-08P. Ampheno

N184157 September 16, 2011

The tariff classification of cylindrical EMI suppression ferrite cores from China

The merchandise concerned is referred to as a cylindrical EMI (electro-magnetic interference) suppression ferrite core (part # 28B1250-000). The item is described as a broadband EMI suppressor made of solid ferrite core. It is used on round

H045160 January 11, 2010

Classification of Ceramic Insulators; Internal Advice

The subject merchandise is described as a ceramic insulator washer, a ceramic insulator sleeve and a ceramic electrode insulator (referred to collectively as ceramic insulators). These articles are made up of ceramic material and are design

Other codes in heading 8547

View all codes in heading 8547 →

Duty by origin country

The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 8547.90.00.10 from each major US trading partner.

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