Technically reviewed by Vincent, Founder at HEXVARO
Last reviewed
Quick answer
Quick answer: HS codes for common fasteners
The HS code for iron or steel bolts is 7318.15, and for nuts it is 7318.16. Fasteners made of other metals use different headings. Confirm the full national code with your customs broker before you ship.
| HS code | Official description | Typical products |
|---|---|---|
| 7318.14 | Self-tapping screws | Self-tapping and self-drilling screws |
| 7318.15 | Other screws and bolts, whether or not with their nuts or washers | Hex bolts, socket screws, structural bolts, studs |
| 7318.16 | Nuts | Hex, lock, flange and weld nuts |
| 7318.21 | Spring washers and other lock washers | DIN 127 spring washers |
| 7318.22 | Other washers | DIN 125 and F436 flat washers |
All six-digit codes under heading 7318
Heading 7318 covers screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers and similar articles of iron or steel.
| HS code | Official description | Typical products |
|---|---|---|
| 7318.11 | Coach screws | DIN 571 lag screws |
| 7318.12 | Other wood screws | Wood and chipboard screws |
| 7318.13 | Screw hooks and screw rings | Hooks and rings with a wood-screw thread |
| 7318.14 | Self-tapping screws | Self-tapping and self-drilling screws |
| 7318.15 | Other screws and bolts, whether or not with their nuts or washers | Hex bolts, socket screws, structural bolts, studs |
| 7318.16 | Nuts | Hex, lock, flange and weld nuts |
| 7318.19 | Other threaded articles | Threaded items not covered above |
| 7318.21 | Spring washers and other lock washers | DIN 127 spring washers |
| 7318.22 | Other washers | DIN 125 and F436 flat washers |
| 7318.23 | Rivets | Solid and blind rivets of steel |
| 7318.24 | Cotters and cotter pins | Split pins |
| 7318.29 | Other non-threaded articles | Non-threaded items not covered above |
Why the same bolt has different codes by country
The World Customs Organization sets the first six digits. Each country then adds its own. The EU uses eight-digit CN codes plus TARIC digits. The United States uses ten-digit HTS codes. Those extra digits can depend on diameter, tensile strength, head type or material, and they set the duty.
- US example: 7318.15.50 covers threaded studs, and 7318.15.80 covers screws and bolts with shanks of 6 mm or more.
- EU example: 7318 15 42 and 7318 15 48 cover certain screws and bolts without heads.
Products that need a closer look
- Threaded rod and studs: usually classified under 7318.15, but the national split varies.
- Concrete anchors: the code depends on the design and the importing country's rulings.
- U-bolts and eye bolts: check whether the item counts as a bolt, a screw ring or another article of steel.
- Bolts packed with nuts and washers: 7318.15 covers them when they are entered together as sets.
- Stainless steel: it stays in heading 7318, but national codes and duties can differ from carbon steel.
- Brass, copper or aluminium fasteners: these use other chapters, such as 7415 for copper and 7616 for aluminium.
What to send your customs broker
Ask your supplier to show a suggested HS code on the commercial invoice. The importer remains responsible for the final declaration.
- Product description, standard and size range.
- Material and property class or tensile strength.
- Finish, and whether the items ship as sets.
- Country of origin and the supplier's production site.
- A drawing or photo for any non-standard part.
Frequently asked questions
What is the HS code for bolts?
Iron or steel bolts fall under 7318.15. The full code depends on the importing country.
What is the HS code for nuts?
Iron or steel nuts fall under 7318.16.
What is the HS code for washers?
Spring and lock washers fall under 7318.21. Flat and other washers fall under 7318.22.
What is the HS code for self-drilling screws?
Self-drilling screws are normally classified as self-tapping screws under 7318.14. Confirm this with your broker for your market.
What is the HS code for threaded rod?
Threaded rod is usually classified under 7318.15. The national digits vary, so confirm them before shipment.
Is the HS code the same in every country?
Only the first six digits are shared. Each country adds its own digits, and these decide the duty rate.