# United States tariff lines under HS 8459.21

> The United States tariff splits HS 8459.21 (other drilling machines: Numerically controlled) into 2 national lines: 8459.21.00.40 (used or rebuilt) and 8459.21.00.80 (other). The general (MFN) duty is 4.2% on all 2 lines.

Source: https://border.bot/countries/united-states/hs-codes/845921
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) / [8459.21](https://border.bot/countries/united-states/hs-codes/845921)

## Key facts

- HS subheading: [8459.21](https://border.bot/hs-codes/845921)
- Duty (MFN): 4.2%
- National lines: 2
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

## United States lines under 8459.21

The United States tariff splits HS 8459.21 (other drilling machines: Numerically controlled) into 2 national lines: 8459.21.00.40 (used or rebuilt) and 8459.21.00.80 (other).

The general (MFN) duty is 4.2% on all 2 lines.

- [8459.21.00.40](https://border.bot/countries/united-states/hs-codes/8459210040) Other drilling machines, Numerically controlled, Used or rebuilt. Duty (MFN): 4.2%
- [8459.21.00.80](https://border.bot/countries/united-states/hs-codes/8459210080) Other drilling machines, Numerically controlled, Other. Duty (MFN): 4.2%

## In other countries

No other national tariff on border.bot has live lines under 8459.21 yet.

- [The Harmonized System text for 8459.21](https://border.bot/hs-codes/845921)

- Previous subheading: [8459.10](https://border.bot/countries/united-states/hs-codes/845910) Machine tools (including way-type unit head machines) for drilling, boring, milling, threading or tapping by removing metal, other than lathes (including turning centers) of heading 8458
- Next subheading: [8459.29](https://border.bot/countries/united-states/hs-codes/845929) Machine tools (including way-type unit head machines) for drilling, boring, milling, threading or tapping by removing metal, other than lathes (including turning centers) of heading 8458

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8459.21?

The United States tariff splits HS 8459.21 (other drilling machines: Numerically controlled) into 2 national lines: 8459.21.00.40 (used or rebuilt) and 8459.21.00.80 (other).

### What is the duty on HS 8459.21 in the United States?

The general (MFN) duty is 4.2% on all 2 lines.

## 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/845921.json