HTS heading 7318
HTS 7318: Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers
Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel
U.S. import duty rates for heading 7318 from the 2026 HTS Revision 17, with the additional 2026 tariff layers that apply by country of origin for entries on September 2, 2026. Chapter 73: Articles of iron or steel.
- General rate
- Free to 12.5%
- column 1, normal trade relations
- From China, all-in
- 57.5% to 87.5%
- includes Section 301
- Rate lines
- 17
- 48 filable 10-digit lines
- Additional duties
- Section 232, Section 301 (China)
- as modeled on 2026-09-02
Rate lines under heading 7318
Every line as the schedule prints it. Bold rows are the 8-digit legal lines that carry the rate; indented rows beneath them are the 10-digit statistical lines an entry is filed at.
| HTS no. | Description | General | Special | Column 2 | Unit |
|---|---|---|---|---|---|
| 7318 | Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: | ||||
| Threaded articles: | |||||
| 7318.11.00.00 | Coach screws | 12.5% | Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) | 25% | kg |
| 7318.12.00.00 | Other wood screws | 12.5% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 7318.13.00 | Screw hooks and screw rings | 5.7% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 45% | |
| 7318.13.00.30 | Having shanks or threads with a diameter of less than 6 mm | kg | |||
| 7318.13.00.60 | Having shanks or threads with a diameter of 6 mm or more | kg | |||
| 7318.14 | Self-tapping screws: | ||||
| 7318.14.10 | Having shanks or threads with a diameter of less than 6 mm | 6.2% | Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 3.1% (JP) | 45% | |
| 7318.14.10.30 | Of stainless steel | kg | |||
| 7318.14.10.60 | Other | kg | |||
| 7318.14.50 | Having shanks or threads with a diameter of 6 mm or more | 8.6% | Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 4.3% (JP) | 45% | |
| 7318.14.50.20 | Of stainless steel | kg | |||
| 7318.14.50.80 | Other | kg | |||
| 7318.15 | Other screws and bolts, whether or not with their nuts or washers: | ||||
| 7318.15.20 | Bolts and bolts and their nuts or washers entered or exported in the same shipment | Free | 3.5% | ||
| 7318.15.20.10 | Having shanks or threads with a diameter of less than 6 mm | kg | |||
| Having shanks or threads with a diameter of 6 mm or more: | |||||
| 7318.15.20.20 | Track bolts | kg | |||
| 7318.15.20.30 | Structural bolts | kg | |||
| Bent bolts: | |||||
| 7318.15.20.41 | Right-angle anchor bolts | kg | |||
| 7318.15.20.46 | Other | kg | |||
| Other: | |||||
| With round heads: | |||||
| 7318.15.20.51 | Of stainless steel | kg | |||
| 7318.15.20.55 | Other | kg | |||
| With hexagonal heads: | |||||
| 7318.15.20.61 | Of stainless steel | kg | |||
| 7318.15.20.65 | Other | kg | |||
| Other: | |||||
| 7318.15.20.91 | Of stainless steel | kg | |||
| 7318.15.20.95 | Other | kg | |||
| 7318.15.40.00 | Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter (not including cap screws) | Free | 2.2¢/kg | kg | |
| 7318.15.50 | Studs | Free | 45% | ||
| 7318.15.50.30 | Of stainless steel | kg | |||
| Other: | |||||
| Continuously threaded rod: | |||||
| 7318.15.50.51 | Of alloy steel | kg | |||
| 7318.15.50.56 | Other | kg | |||
| 7318.15.50.90 | Other | kg | |||
| Other: | |||||
| 7318.15.60 | Having shanks or threads with a diameter of less than 6 mm | 6.2% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 45% | |
| Socket screws: | |||||
| 7318.15.60.10 | Of stainless steel | kg | |||
| 7318.15.60.40 | Other | kg | |||
| Other: | |||||
| 7318.15.60.70 | Of stainless steel | kg | |||
| 7318.15.60.80 | Other | kg | |||
| 7318.15.80 | Having shanks or threads with a diameter of 6 mm or more | 8.5% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 45% | |
| 7318.15.80.20 | Set screws | kg | |||
| Other: | |||||
| Socket screws: | |||||
| 7318.15.80.30 | Of stainless steel | kg | |||
| 7318.15.80.45 | Other | kg | |||
| Other: | |||||
| With hexagonal heads: | |||||
| 7318.15.80.55 | Of stainless steel | kg | |||
| Other: | |||||
| 7318.15.80.66 | Cap screws | kg | |||
| 7318.15.80.69 | Other | kg | |||
| Other: | |||||
| 7318.15.80.82 | Of stainless steel | kg | |||
| 7318.15.80.85 | Other | kg | |||
| 7318.16.00 | Nuts | Free | 0.5% | ||
| Lugnuts: | |||||
| 7318.16.00.15 | Non-locking chrome-plated | kg | |||
| 7318.16.00.30 | Locking | kg | |||
| 7318.16.00.45 | Other | kg | |||
| Other: | |||||
| 7318.16.00.60 | Of stainless steel | kg | |||
| 7318.16.00.85 | Other | kg | |||
| 7318.19.00.00 | Other | 5.7% | Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 2.85% (JP) | 45% | kg |
| Non-threaded articles: | |||||
| 7318.21.00 | Spring washers and other lock washers | 5.8% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 2.9% (JP) | 35% | |
| 7318.21.00.30 | Helical spring lock washers | kg | |||
| 7318.21.00.90 | Other | kg | |||
| 7318.22.00.00 | Other washers | Free | 1.3¢/kg | kg | |
| 7318.23.00.00 | Rivets | Free | 2.2¢/kg | kg | |
| 7318.24.00.00 | Cotters and cotter pins | 3.8% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | 45% | kg |
| 7318.29.00.00 | Other | 2.8% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | 45% | kg |
Source: USITC, 2026 HTS Revision 17. General = column 1 general; Special = column 1 rates for qualifying trade-agreement goods, with the program codes; Column 2 = the statutory rate for Cuba and North Korea.
All-in 2026 rate by country of origin
The general rate plus every additional duty the engine applies for that origin on September 2, 2026(Section 301, Section 232, Section 201, Section 338, and the forced-labor Section 301 action), as a share of customs value. Columns appear only for origins that carry an additional layer somewhere in this heading; for every other origin the all-in rate is the general rate.
| Rate line | General | China | Vietnam | India | Mexico | Canada | Germany (EU) | Japan | South Korea | Taiwan | Thailand |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 7318.11.00.00Coach screws | 12.5% | 87.5%9903.82.02, 9903.88.03 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 |
| 7318.12.00.00Other wood screws | 12.5% | 87.5%9903.82.02, 9903.88.03 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 | 62.5%9903.82.02 |
| 7318.13.00Screw hooks and screw rings | 5.7% | 80.7%9903.82.02, 9903.88.03 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 |
| 7318.14.10Having shanks or threads with a diameter of less than 6 mm | 6.2% | 81.2%9903.82.02, 9903.88.03 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 |
| 7318.14.50Having shanks or threads with a diameter of 6 mm or more | 8.6% | 83.6%9903.82.02, 9903.88.03 | 58.6%9903.82.02 | 58.6%9903.82.02 | 58.6%9903.82.02 | 58.6%9903.82.02 | 58.6%9903.82.02 | 58.6%9903.82.02 | 58.6%9903.82.02 | 58.6%9903.82.02 | 58.6%9903.82.02 |
| 7318.15.20Bolts and bolts and their nuts or washers entered or exported in the same shipment | Free | 75%9903.82.02, 9903.88.03 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 |
| 7318.15.40.00Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter (not including cap screws) | Free | 75%9903.82.02, 9903.88.03 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 |
| 7318.15.50Studs | Free | 75%9903.82.02, 9903.88.03 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 |
| 7318.15.60Having shanks or threads with a diameter of less than 6 mm | 6.2% | 81.2%9903.82.02, 9903.88.03 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 | 56.2%9903.82.02 |
| 7318.15.80Having shanks or threads with a diameter of 6 mm or more | 8.5% | 83.5%9903.82.02, 9903.88.03 | 58.5%9903.82.02 | 58.5%9903.82.02 | 58.5%9903.82.02 | 58.5%9903.82.02 | 58.5%9903.82.02 | 58.5%9903.82.02 | 58.5%9903.82.02 | 58.5%9903.82.02 | 58.5%9903.82.02 |
| 7318.16.00Nuts | Free | 57.5%9903.82.02, 9903.88.15 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 |
| 7318.19.00.00Other | 5.7% | 80.7%9903.82.02, 9903.88.03 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 | 55.7%9903.82.02 |
| 7318.21.00Spring washers and other lock washers | 5.8% | 80.8%9903.82.02, 9903.88.03 | 55.8%9903.82.02 | 55.8%9903.82.02 | 55.8%9903.82.02 | 55.8%9903.82.02 | 55.8%9903.82.02 | 55.8%9903.82.02 | 55.8%9903.82.02 | 55.8%9903.82.02 | 55.8%9903.82.02 |
| 7318.22.00.00Other washers | Free | 75%9903.82.02, 9903.88.03 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 |
| 7318.23.00.00Rivets | Free | 75%9903.82.02, 9903.88.03 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 | 50%9903.82.02 |
| 7318.24.00.00Cotters and cotter pins | 3.8% | 78.8%9903.82.02, 9903.88.03 | 53.8%9903.82.02 | 53.8%9903.82.02 | 53.8%9903.82.02 | 53.8%9903.82.02 | 53.8%9903.82.02 | 53.8%9903.82.02 | 53.8%9903.82.02 | 53.8%9903.82.02 | 53.8%9903.82.02 |
| 7318.29.00.00Other | 2.8% | 77.8%9903.82.02, 9903.88.03 | 52.8%9903.82.02 | 52.8%9903.82.02 | 52.8%9903.82.02 | 52.8%9903.82.02 | 52.8%9903.82.02 | 52.8%9903.82.02 | 52.8%9903.82.02 | 52.8%9903.82.02 | 52.8%9903.82.02 |
A range means the 10-digit lines under that 8-digit line resolve differently. "+" marks a line with a per-unit duty component the percentage does not capture. "*" marks lines the engine could not price. Chapter 99 headings beneath a rate are the additional-duty provisions applied. AD/CVD, quota, and the regimes listed under "Not included" are not in these numbers.
Additional-duty provisions applied in this heading
- 9903.82.02Section 232 Metals (Annex I-A)Section 232 · origins: China, Vietnam, India, Mexico, Canada, Germany (EU), Japan, South Korea, Taiwan, Thailand
- 9903.88.03Section 301 List 3Section 301 (China) · origins: China
- 9903.88.15Section 301 List 4ASection 301 (China) · origins: China
Exemptions and exclusions that fire automatically here: 9903.05.90 (Forced-labor 301 exemption: Section 232-subject goods (note 52(f))).
Worked example: $10,000 from China
Line 7318.11.00.00 (Coach screws), customs value $10,000, ocean freight, entered on September 2, 2026. Duties stack on the customs value; the fees are set by CBP.
| Provision | Rate | Amount |
|---|---|---|
| 7318.11.00.00Base duty (column 1, general) | 12.5% | $1,250.00 |
| 9903.82.02Section 232 Metals (Annex I-A) | 50% | $5,000.00 |
| 9903.88.03Section 301 List 3 | 25% | $2,500.00 |
| 9903.05.90Forced-labor 301 exemption: Section 232-subject goods (note 52(f)) | 0% | $0.00 |
| Total duty | 87.5% | $8,750.00 |
| Merchandise Processing Fee (MPF) | 0.3464%, min/max apply | $34.64 |
| Harbor Maintenance Fee (HMF) | 0.125%, ocean only | $12.50 |
| Landed cost before freight and brokerage | $18,797.14 |
Borderless files this entry for a flat $149 pay-as-you-go with ISF bundled, or $79 on a 12-month agreement with no monthly fee, and no duty-disbursement fee either way. See pricing.
Trade-agreement preferences
Lines in this heading print a preferential rate for goods that qualify under these programs. The special column above shows which program codes each line carries. Qualification is a fact about the goods (rules of origin, certification on file), not about the country they shipped from.
- AU U.S.-Australia FTA
- B Automotive Products Trade Act (Canada)
- BH U.S.-Bahrain FTA
- CL U.S.-Chile FTA
- CO U.S.-Colombia TPA
- E CBERA
- IL U.S.-Israel FTA
- JO U.S.-Jordan FTA
- KR KORUS (U.S.-Korea FTA)
- MA U.S.-Morocco FTA
- OM U.S.-Oman FTA
- P CAFTA-DR
- PA U.S.-Panama TPA
- PE U.S.-Peru TPA
- S USMCA
- SG U.S.-Singapore FTA
- JP U.S.-Japan Trade Agreement
Not included in the numbers above
Antidumping and countervailing duties, tariff-rate quotas, and partner-agency requirements are never in these rates. The engine also flags regimes it knows about but does not compute for this heading:
No unmodeled regime in the current measures bundle touches heading 7318. That is not a statement that no AD/CVD order exists for these goods: check the Commerce Department's orders for the specific product and origin before relying on a landed cost.
Questions about HTS 7318
What is the U.S. import duty rate for HTS 7318?
The general (column 1) rate for the 17 rate lines under heading 7318 is Free to 12.5%. That is the base rate for goods from countries with normal trade relations. Additional duties stack on top by origin: for goods from China entered on September 2, 2026 the all-in ad valorem rate is 57.5% to 87.5%.
Is HTS 7318 subject to Section 301 tariffs on goods from China?
Yes. Section 301 List 3 (9903.88.03), Section 301 List 4A (9903.88.15) applies to goods of Chinese origin under this heading, on top of the general rate.
How many HTS codes are in heading 7318?
Heading 7318 has 17 legal rate lines (8-digit) and 48 filable statistical lines (10-digit) in the 2026 HTS Revision 17. The entry is filed at the 10-digit level; the rate is set at the 8-digit line.
Which trade agreements give a lower rate under HTS 7318?
Lines in this heading list preferential rates for goods that qualify under U.S.-Australia FTA, Automotive Products Trade Act (Canada), U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, CBERA, U.S.-Israel FTA, U.S.-Jordan FTA, KORUS (U.S.-Korea FTA), U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA, U.S.-Japan Trade Agreement. The special column shows the program codes per line. Eligibility depends on the rules of origin and the certification on file, not on the shipping country alone.
How this page is built
The rate lines are the USITC 2026 HTS Revision 17 export, unedited. The all-in rates come from the Borderless tariff engine (the same code behind the tariff simulator), run for each 8-digit line and origin with an entry date of 2026-09-02; its measures bundle is dated 2026-08-21and cites the Federal Register and CBP notices behind every layer. Page generated 2026-09-02. These are estimates for planning, not classification advice or a filing: the classification of your goods, the origin determination, and any claim are confirmed by a licensed broker before an entry is filed. Maintained by Borderless CHB; Joy Xue, Licensed U.S. customs broker (CBP filer code NQR), confirms the classification and the duty stack on every entry before it is filed.