# HS code 3917.40: Fittings

> HS code 3917.40 covers fittings. It sits in heading 39.17 (tubes, pipes and hoses, and fittings therefor (for example, joints, elbows, flanges), of plastics) in chapter 39 (plastics and articles thereof). Other goods of heading 39.17 are classified under 3917.10 (artificial guts (sausage casings) of hardened protein or of cellulosic materials), 3917.21 (tubes, pipes and hoses, rigid, of polymers of ethylene), 3917.22 (tubes, pipes and hoses, rigid, of polymers of propylene), 3917.23 (tubes, pipes and hoses, rigid, of polymers of vinyl chloride) or 5 others. National tariff lines under 3917.40 are live on border.bot for the United States (7 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/391740
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 39](https://border.bot/hs-codes/39) / [39.17](https://border.bot/hs-codes/3917) / [3917.40](https://border.bot/hs-codes/391740)

## Key facts

- HS code: 3917.40
- Covers: Fittings
- Heading: [39.17: Tubes, pipes and hoses, and fittings therefor (for example, joints, elbows, flanges), of plastics](https://border.bot/hs-codes/3917)
- Chapter: [39: Plastics and articles thereof](https://border.bot/hs-codes/39)
- Edition: HS2022
- Duty in the United States: [See its 7 lines](https://border.bot/countries/united-states/hs-codes/391740)

## What this code covers

HS code 3917.40 covers fittings.

The legal text of the subheading is “Fittings”, in HS2022.

## What it doesn’t cover

Other goods of heading 39.17 are classified under 3917.10 (artificial guts (sausage casings) of hardened protein or of cellulosic materials), 3917.21 (tubes, pipes and hoses, rigid, of polymers of ethylene), 3917.22 (tubes, pipes and hoses, rigid, of polymers of propylene), 3917.23 (tubes, pipes and hoses, rigid, of polymers of vinyl chloride) or 5 others.

- [3917.10](https://border.bot/hs-codes/391710) Artificial guts (sausage casings) of hardened protein or of cellulosic materials
- [3917.21](https://border.bot/hs-codes/391721) Tubes, pipes and hoses, rigid: Of polymers of ethylene
- [3917.22](https://border.bot/hs-codes/391722) Tubes, pipes and hoses, rigid: Of polymers of propylene
- [3917.23](https://border.bot/hs-codes/391723) Tubes, pipes and hoses, rigid: Of polymers of vinyl chloride
- [3917.29](https://border.bot/hs-codes/391729) Tubes, pipes and hoses, rigid: Of other plastics
- [3917.31](https://border.bot/hs-codes/391731) Other tubes, pipes and hoses: Flexible tubes, pipes and hoses, having a minimum burst pressure of 27.6 MPa
- [3917.32](https://border.bot/hs-codes/391732) Other tubes, pipes and hoses: Other, not reinforced or otherwise combined with other materials, without fittings
- [3917.33](https://border.bot/hs-codes/391733) Other tubes, pipes and hoses: Other, not reinforced or otherwise combined with other materials, with fittings
- [3917.39](https://border.bot/hs-codes/391739) Other tubes, pipes and hoses: Other

## How it is structured

3917.40 is a six-digit subheading. Its first two digits, 39, are the chapter; the first four, 3917, are heading 39.17; the last two, 40, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 39: Plastics and articles thereof
- Heading 39.17: Tubes, pipes and hoses, and fittings therefor (for example, joints, elbows, flanges), of plastics
- Subheading 3917.40: Fittings

## In other countries

National tariff lines under 3917.40 are live on border.bot for the United States (7 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/391740): 7 lines, used by 1 other country

- Previous subheading: [3917.39](https://border.bot/hs-codes/391739) Other tubes, pipes and hoses: Other
- Next subheading: [3918.10](https://border.bot/hs-codes/391810) Of polymers of vinyl chloride

## Frequently asked questions

### What does HS code 3917.40 cover?

HS code 3917.40 covers fittings.

### Which heading and chapter is HS code 3917.40 in?

HS code 3917.40 is in heading 39.17 (tubes, pipes and hoses, and fittings therefor (for example, joints, elbows, flanges), of plastics) in chapter 39 (plastics and articles thereof).

### Where are goods of heading 39.17 classified when 3917.40 doesn’t fit?

Other goods of heading 39.17 are classified under 3917.10 (artificial guts (sausage casings) of hardened protein or of cellulosic materials), 3917.21 (tubes, pipes and hoses, rigid, of polymers of ethylene), 3917.22 (tubes, pipes and hoses, rigid, of polymers of propylene), 3917.23 (tubes, pipes and hoses, rigid, of polymers of vinyl chloride) or 5 others.

### Which countries’ tariffs list national lines under HS code 3917.40?

National tariff lines under 3917.40 are live on border.bot for the United States (7 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

Machine-readable: https://border.bot/hs-codes/391740.json