Screws — HTS 7318
Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel
Chapter 73 › Heading 7318
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 7318 is a broad product category for many iron or steel fasteners and similar hardware. It includes threaded items such as screws, bolts, nuts, coach screws, and screw hooks, as well as non-threaded or related items such as rivets, cotters, cotter pins, washers, spring washers, and comparable articles. The heading describes the general family of goods; it is not, by itself, the complete classification for an imported product.
To narrow a product to a specific 8-digit HTSUS code, first identify the article’s exact type and design, then follow the relevant subheadings and statistical provisions. Classification may depend on features such as whether the item is a screw, bolt, nut, washer, or another fastener; its construction and material; its dimensions or intended use where the tariff provisions call for them; and whether it has special characteristics. Confirm the full code and any applicable notes in the current official HTSUS, and obtain customs-broker or classification-professional advice when the product does not fit clearly.
What to check
- Describe the item precisely: identify whether it is threaded, non-threaded, a washer, rivet, cotter, hook, or another listed fastener.
- Verify the base material and construction, including whether the article is iron or steel and whether any coating, plating, or added material affects the description.
- Check product specifications such as dimensions, thread type, head style, shape, and design features against the wording of the candidate subheadings.
- Review the complete 8-digit provisions, section and chapter notes, and any applicable exclusions rather than stopping at heading 7318.
- Keep technical drawings, supplier descriptions, photographs, and test or material records to support the classification; ask a customs broker or seek a formal ruling if ambiguity remains.
HTS heading 7318 summary
Screws is a 4-digit product category containing 10 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 7318.14 | Self-tapping screws |
| 7318.15 | Other screws and bolts, whether or not with their nuts or washers |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 7318.11.00.00 👉 | Coach screws | 12.5% | Free | 25% |
| 7318.12.00.00 👉 | Other wood screws | 12.5% | Free | 25% |
| 7318.13.00 👉 | Screw hooks and screw rings | 5.7% | Free | 45% |
| 7318.16.00 👉 | Nuts | Free | — | 0.5% |
| 7318.19.00.00 👉 | Other | 5.7% | Free | 45% |
| 7318.21.00 👉 | Spring washers and other lock washers | 5.8% | Free | 35% |
| 7318.22.00.00 👉 | Other washers | Free | — | 1.3¢/kg |
| 7318.23.00.00 👉 | Rivets | Free | — | 2.2¢/kg |
| 7318.24.00.00 👉 | Cotters and cotter pins | 3.8% | Free | 45% |
| 7318.29.00.00 👉 | Other | 2.8% | Free | 45% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 7318?
Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.