7318.15.50.56—Other screws and bolts, whether or not with their nuts or washers, studs, other
General
Free
Units
kg
Column 2
45%
Special
—
7318.15.50.56—Other screws and bolts, whether or not with their nuts or washers, studs, otherGeneral
Free
Units
kg
Column 2
45%
Special
—
HTS 7318.15.50.56 is the U.S. Harmonized Tariff Schedule classification for Other screws and bolts, whether or not with their nuts or washers, studs, other. It's a 10-digit statistical line in Chapter 73: Articles of iron or steel, Section XV: Base Metals and Articles of Base Metal, used by U.S. Customs and Border Protection to determine the duty rate at entry. 9 Chapter 99 tariff modifications currently stack on top of the base rate, and 7 active AD/CVD orders flag this code.
New to HTS codes? Read our guide on how HTS classification works →
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.80.03 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.84 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.86 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.90 | section_232 | The duty provided in the applicable subheading + 50%. |
| 9903.81.92 | section_232 | The duty provided in the applicable subheading. |
| 9903.81.93 | section_232 | The duty provided in the applicable subheading + 50%. |
| 9903.81.97 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.99 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.82.02 | section_232 | 50% |
Active orders that may apply to imports under this HTS code. HTS coverage is advisory — actual scope depends on each order's product description. Run the AD/CVD lookup → to check whether your specific shipment is in scope.
Carbon and Alloy Steel Threaded Rod
Carbon and Alloy Steel Threaded Rod
Carbon and Alloy Steel Threaded Rod
Carbon and Alloy Steel Threaded Rod
Alloy and Certain Carbon Steel Threaded Rod
Alloy and Certain Carbon Steel Threaded Rod
Certain Corrosion-Resistant Steel Products from India
Past CBP decisions classifying real products under this HTS code. Useful precedent when classifying a similar product — each ruling shows how CBP interpreted the code for a specific case.
Modification of NY N331989; tariff classification of steel assembly hardware sets from Vietnam
The tariff classification of utility pole line hardware from China and India
The tariff classification of threaded foundation rods from China. Correction to Ruling Number N071876.
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
HTS 7318.15.50.56 is the U.S. Harmonized Tariff Schedule classification for Other screws and bolts, whether or not with their nuts or washers, studs, other. It belongs to Chapter 73 of the HTSUS.
The general (Column 1) duty rate for HTS 7318.15.50.56 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
The Column 2 rate for HTS 7318.15.50.56 is 45%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Yes — HTS 7318.15.50.56 is covered by section_232 provision 9903.80.03 (The duty provided in the applicable subheading + 25%). 8 additional overlays also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
Yes — 7 AD/CVD orders flag this code: A-549-840 (AD, Thailand), A-533-887 (AD, India), C-533-888 (CVD, India) plus 4 more. Open the code page for deposit rates, scope determinations, and the linked case lookups.
Section and chapter notes that govern this code
This section does not cover: (a) Prepared paints, inks, or other products with a basis of metallic flakes or powder (headings 3207 to 3210, 3212, 3213, or 3215); (b) Ferro-cerium and other pyrophoric alloys (heading 3606); (c) Headgear and parts thereof of heading 6506 or 6507; (d) Umbrella frames or other articles of heading 6603; (e) Goods of chapter 71 (for example, precious-metal alloys, base metal clad with precious metal, imitation jewelry); (f) Articles of section XVI (machinery, mechanical appliances, and electrical equipment); (g) Assembled railway or tramway track (heading 8608); (h) Articles of section XVII (vehicles, aircraft, vessels); (ij) Instruments or apparatus of section XVIII (clocks, optical, musical, arms); (k) Lead shot prepared for ammunition (heading 9306); (l) Articles of section XX (furniture, toys, games, sports); or (m) Hand sieves, buttons, pens, pencil holders, pen nibs, monopods, bipods, tripods, and similar articles of section XX.
Throughout this schedule, the expression 'parts of general use' means: (a) Articles of heading 7307, 7312, 7315, 7317, or 7318, and similar articles of other base metal; (b) Springs and leaves for springs, of base metal, other than clock or watch springs (heading 9114); and (c) Articles of headings 8301, 8302, 8308, 8310.
Throughout this schedule, the expression 'base metals' means: iron and steel, copper, nickel, aluminum, lead, zinc, tin, tungsten (wolfram), molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium, and thallium.
Tandom guides relevant to this code
Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
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Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
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What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
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How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.
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How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
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