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

All 48 HTS codes under heading 7318 (screws, bolts, nuts, coach screws), with their duty rates from the 2026 HTS Revision 23. General duty Free to 12.5%.

Every line of heading 7318

  • 7318 Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel.
  • 7318.11.00.00 Coach screws (under: Threaded articles) (kg): General 12.5%; Special Free (A+,AU,B,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG); Column 2 25%.
  • 7318.12.00.00 Other wood screws (under: Threaded articles) (kg): General 12.5%; Special Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
  • 7318.13.00 Screw hooks and screw rings (under: Threaded articles): General 5.7%; Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 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 (under: Threaded articles).
  • 7318.14.10 Having shanks or threads with a diameter of less than 6 mm: General 6.2%; Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 3.1% (JP); Column 2 45%.
  • 7318.14.10.30 Of stainless steel (under: Having shanks or threads with a diameter of less than 6 mm) (kg).
  • 7318.14.10.60 Other (under: Having shanks or threads with a diameter of less than 6 mm) (kg).
  • 7318.14.50 Having shanks or threads with a diameter of 6 mm or more: General 8.6%; Special Free (A+,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 4.3% (JP); Column 2 45%.
  • 7318.14.50.20 Of stainless steel (under: Having shanks or threads with a diameter of 6 mm or more) (kg).
  • 7318.14.50.80 Other (under: Having shanks or threads with a diameter of 6 mm or more) (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: General Free; Special none; Column 2 3.5%.
  • 7318.15.20.10 Having shanks or threads with a diameter of less than 6 mm (kg).
  • 7318.15.20.20 Track bolts (under: Having shanks or threads with a diameter of 6 mm or more) (kg).
  • 7318.15.20.30 Structural bolts (under: Having shanks or threads with a diameter of 6 mm or more) (kg).
  • 7318.15.20.41 Right-angle anchor bolts (under: Bent bolts) (kg).
  • 7318.15.20.46 Other (under: Bent bolts) (kg).
  • 7318.15.20.51 Of stainless steel (under: With round heads) (kg).
  • 7318.15.20.55 Other (under: With round heads) (kg).
  • 7318.15.20.61 Of stainless steel (under: With hexagonal heads) (kg).
  • 7318.15.20.65 Other (under: With hexagonal heads) (kg).
  • 7318.15.20.91 Of stainless steel (under: Other) (kg).
  • 7318.15.20.95 Other (under: 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) (kg): General Free; Special none; Column 2 2.2¢/kg.
  • 7318.15.50 Studs (under: Other screws and bolts, whether or not with their nuts or washers): General Free; Special none; Column 2 45%.
  • 7318.15.50.30 Of stainless steel (under: Studs) (kg).
  • 7318.15.50.51 Of alloy steel (under: Continuously threaded rod) (kg).
  • 7318.15.50.56 Other (under: Continuously threaded rod) (kg).
  • 7318.15.50.90 Other (under: Other) (kg).
  • 7318.15.60 Having shanks or threads with a diameter of less than 6 mm: General 6.2%; Special Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 45%.
  • 7318.15.60.10 Of stainless steel (under: Socket screws) (kg).
  • 7318.15.60.40 Other (under: Socket screws) (kg).
  • 7318.15.60.70 Of stainless steel (under: Other) (kg).
  • 7318.15.60.80 Other (under: Other) (kg).
  • 7318.15.80 Having shanks or threads with a diameter of 6 mm or more: General 8.5%; Special Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 45%.
  • 7318.15.80.20 Set screws (under: Having shanks or threads with a diameter of 6 mm or more) (kg).
  • 7318.15.80.30 Of stainless steel (under: Socket screws) (kg).
  • 7318.15.80.45 Other (under: Socket screws) (kg).
  • 7318.15.80.55 Of stainless steel (under: With hexagonal heads) (kg).
  • 7318.15.80.66 Cap screws (under: Other) (kg).
  • 7318.15.80.69 Other (under: Other) (kg).
  • 7318.15.80.82 Of stainless steel (under: Other) (kg).
  • 7318.15.80.85 Other (under: Other) (kg).
  • 7318.16.00 Nuts (under: Threaded articles): General Free; Special none; Column 2 0.5%.
  • 7318.16.00.15 Non-locking chrome-plated (under: Lugnuts) (kg).
  • 7318.16.00.30 Locking (under: Lugnuts) (kg).
  • 7318.16.00.45 Other (under: Lugnuts) (kg).
  • 7318.16.00.60 Of stainless steel (under: Other) (kg).
  • 7318.16.00.85 Other (under: Other) (kg).
  • 7318.19.00.00 Other (under: Threaded articles) (kg): General 5.7%; Special Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 2.85% (JP); Column 2 45%.
  • 7318.21.00 Spring washers and other lock washers: General 5.8%; Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 2.9% (JP); Column 2 35%.
  • 7318.21.00.30 Helical spring lock washers (under: Spring washers and other lock washers) (kg).
  • 7318.21.00.90 Other (under: Spring washers and other lock washers) (kg).
  • 7318.22.00.00 Other washers (under: Non-threaded articles) (kg): General Free; Special none; Column 2 1.3¢/kg.
  • 7318.23.00.00 Rivets (under: Non-threaded articles) (kg): General Free; Special none; Column 2 2.2¢/kg.
  • 7318.24.00.00 Cotters and cotter pins (under: Non-threaded articles) (kg): General 3.8%; Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG); Column 2 45%.
  • 7318.29.00.00 Other (under: Non-threaded articles) (kg): General 2.8%; Special Free (A,AU,B,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG); Column 2 45%.

From MFG Calcs data: Steel fasteners

U.S. imports of steel fasteners (heading 7318) came to $5.99B in 2025, with $2.15B in calculated duty: an effective duty of 35.9%, every duty included.

Effective duty in Sep 2026: 53.1%, against 50.8% in Sep 2025.

Largest sources in 2025: Taiwan $1.92B at 31.7% effective duty; China $1.03B at 65.5% effective duty; Japan $572M at 32.3% effective duty; Canada $321M at 16.4% effective duty; Germany $315M at 34.4% effective duty.

These are family totals from U.S. import statistics published through USITC DataWeb, not this heading's rate alone; effective duty is calculated duty as a share of customs value, an estimate, not a ruling.

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.

Last reviewed 2026-11-12.