# United States tariff lines under HS 8471.70

> The United States tariff splits HS 8471.70 (storage units) into 11 national lines: 8471.70.10.00 (without read-write unit assembled therein; read-write units entered separately), 8471.70.20.00 (units for physical incorporation into automatic data processing machines or units thereof), 8471.70.30.00 (other), 8471.70.40.35 (flexible (floppy) magnetic disk drive units) and 7 others. Every United States line under 8471.70 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/847170
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 84](https://border.bot/countries/united-states/hs-codes/84) / [8471.70](https://border.bot/countries/united-states/hs-codes/847170)

## Key facts

- HS subheading: [8471.70](https://border.bot/hs-codes/847170)
- Duty (MFN): Free
- National lines: 11
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

## United States lines under 8471.70

The United States tariff splits HS 8471.70 (storage units) into 11 national lines: 8471.70.10.00 (without read-write unit assembled therein; read-write units entered separately), 8471.70.20.00 (units for physical incorporation into automatic data processing machines or units thereof), 8471.70.30.00 (other), 8471.70.40.35 (flexible (floppy) magnetic disk drive units) and 7 others.

Every United States line under 8471.70 is free of general (MFN) duty.

- [8471.70.10.00](https://border.bot/countries/united-states/hs-codes/8471701000) Storage units, Magnetic disk drive units, For a disk of a diameter exceeding 21 cm, Without read-write unit assembled therein; read-write units entered separately. Duty (MFN): free
- [8471.70.20.00](https://border.bot/countries/united-states/hs-codes/8471702000) Storage units, Magnetic disk drive units, For a disk of a diameter exceeding 21 cm, Units for physical incorporation into automatic data processing machines or units thereof. Duty (MFN): free
- [8471.70.30.00](https://border.bot/countries/united-states/hs-codes/8471703000) Storage units, Magnetic disk drive units, For a disk of a diameter exceeding 21 cm, Other. Duty (MFN): free
- [8471.70.40.35](https://border.bot/countries/united-states/hs-codes/8471704035) Storage units, Magnetic disk drive units, Other, Not assembled in cabinets, and without attached external power supply, Flexible (floppy) magnetic disk drive units. Duty (MFN): free
- [8471.70.40.65](https://border.bot/countries/united-states/hs-codes/8471704065) Storage units, Magnetic disk drive units, Other, Not assembled in cabinets, and without attached external power supply, Hard magnetic disk drive units. Duty (MFN): free
- [8471.70.40.95](https://border.bot/countries/united-states/hs-codes/8471704095) Storage units, Magnetic disk drive units, Other, Not assembled in cabinets, and without attached external power supply, Other. Duty (MFN): free
- [8471.70.50.35](https://border.bot/countries/united-states/hs-codes/8471705035) Storage units, Magnetic disk drive units, Other, Other, Flexible (floppy) magnetic disk drive units. Duty (MFN): free
- [8471.70.50.65](https://border.bot/countries/united-states/hs-codes/8471705065) Storage units, Magnetic disk drive units, Other, Other, Hard magnetic disk drive units. Duty (MFN): free
- [8471.70.50.95](https://border.bot/countries/united-states/hs-codes/8471705095) Storage units, Magnetic disk drive units, Other, Other, Other. Duty (MFN): free
- [8471.70.60.00](https://border.bot/countries/united-states/hs-codes/8471706000) Storage units, Other storage units, Not assembled in cabinets for placing on a table, desk, wall, floor or similar place. Duty (MFN): free
- [8471.70.90.00](https://border.bot/countries/united-states/hs-codes/8471709000) Storage units, Other storage units, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 8471.70 yet.

- [The Harmonized System text for 8471.70](https://border.bot/hs-codes/847170)

- Previous subheading: [8471.60](https://border.bot/countries/united-states/hs-codes/847160) Input or output units, whether or not containing storage units in the same housing
- Next subheading: [8471.80](https://border.bot/countries/united-states/hs-codes/847180) Other units of automatic data processing machines

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8471.70?

The United States tariff splits HS 8471.70 (storage units) into 11 national lines: 8471.70.10.00 (without read-write unit assembled therein; read-write units entered separately), 8471.70.20.00 (units for physical incorporation into automatic data processing machines or units thereof), 8471.70.30.00 (other), 8471.70.40.35 (flexible (floppy) magnetic disk drive units) and 7 others.

### What is the duty on HS 8471.70 in the United States?

Every United States line under 8471.70 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/847170.json