HTS code 7318 — Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel

Tariff lines under heading 7318

Full 10-digit codes with their general (MFN) duty rates. The correct line depends on the product's material, construction, and use.

Documents required to import under 7318

Customs paperwork typically required to import these goods into the United States. Conditional items depend on shipment value, transport mode, or origin.

• Commercial InvoiceRequired
• Packing ListRequired
• Bill of Lading / Airway BillRequired
• CBP Entry Summary (7501)Required

  Prepared and filed by your customs broker

• CBP Entry / Release (3461)Required

  Prepared and filed by your customs broker

• Customs Bond (CBP 301)Conditional

  Required for formal entries — generally shipments valued over $2,500

  Single-entry or continuous bond, obtained through your broker or a surety

• Importer Security Filing (ISF "10+2")Conditional

  Required for ocean freight only

  Filed electronically at least 24 hours before loading at the foreign port

• Importer ID Input Record (CBP 5106)Conditional

  Required to establish or update your importer-of-record number with CBP

  One-time setup for a new importer; not filed per shipment

• Entry Manifest (CBP 7533)Conditional

  Alternative to the 3461 for informal, low-value, or contiguous-country entries

Common questions

What is HTS code 7318?

HTS heading 7318 covers screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel. It sits in Chapter 73 (iron and steel articles) of the US Harmonized Tariff Schedule and contains 48 tariff lines.

What is the duty rate for HTS 7318?

General duty rates from 2.8% to 12.5%, with 23 duty-free lines. The general rate applies to most-favoured-nation trading partners; goods from countries with a free trade agreement may qualify for a reduced or duty-free special rate.

How many digits does a full HTS code have?

US import entries require the full 10-digit HTS code. Heading 7318 is the first four digits — the remaining six narrow it down to the specific product, which is what determines the duty rate you actually pay.

Related headings in Chapter 73

• 7301Sheet piling of iron or steel, whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or steel
• 7302Railway or tramway track construction material of iron or steel, the following: rails, check-rails and rack rails, switch blades, crossing frogs, point rods and other crossing pieces, sleepers (cross-ties), fish-plates, chairs, chair wedges, sole plates (base plates), rail clips, bedplates, ties and other material specialized for jointing or fixing rails
• 7303Tubes, pipes and hollow profiles, of cast iron
• 7304Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel
• 7305Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel
• 7306Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel
• 7307Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel
• 7308Structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel