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    7318.15.80

    Having shanks or threads with a diameter of 6 mm or more

    This code covers screws, bolts, nuts, and similar articles of iron or steel with a shank or thread diameter of 6mm or more. Use this code when importing these items to determine the applicable 8.5% general duty, or a potentially free rate if the goods qualify for specific trade agreements or preference programs, as detailed within Chapter 73.

    Having shanks or threads with a diameter of 6 mm or more

    Detailed information for HTS Code 7318.15.80

    Chapter 73 covers articles of iron or steel, and specifically this code, 7318.15.80, deals with screws, bolts, nuts, and similar articles with a shank or thread diameter of 6mm or more. This code further breaks down into more specific types like set screws, socket screws (with and without stainless steel composition), and various other screws categorized by head type and material (stainless steel or other). When reporting, choose the appropriate statistical suffix based on the specific type of screw—for example, 7318.15.80.20 for set screws, or 7318.15.80.30 for stainless steel socket screws—to ensure accurate data collection.

    ChapterChapter 73 - Articles of iron or steel
    SectionSection XV - Base Metals and Articles of Base Metal

    Duty snapshot

    Quick reference for the duty outcomes tied to this HTS line.

    General Duty

    8.50%

    Standard trade partners (NTR)

    Special Duty

    Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

    Eligible FTA or preference programs

    The general duty rate for HTS code 7318.15.80 and its subdivisions is 8.50%, applicable to imports from countries without specific trade agreements. Several countries (A*, AU, B, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG) qualify for a 0% duty rate through special trade agreements or preference programs. All reported quantities for this HTS code and its subdivisions must be in kilograms (kg). The specific subdivisions (7318.15.80.20 through 7318.15.80.85) all fall under the same duty structure – either the general 8.50% or the 0% special rate depending on the country of origin and applicable trade agreements.

    Rate of Duty (Column 2): 45%

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    Code subdivisions

    7318.15.80.20

    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: > Threaded articles: > Other screws and bolts, whether or not with their nuts or washers: > Other: > Having shanks or threads with a diameter of 6 mm or more > Set screws

    Parent subheading for dairy herd replacements
    7318.15.80.30

    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: > Threaded articles: > Other screws and bolts, whether or not with their nuts or washers: > Other: > Having shanks or threads with a diameter of 6 mm or more > Other: > Socket screws: > Of stainless steel

    7318.15.80.45

    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: > Threaded articles: > Other screws and bolts, whether or not with their nuts or washers: > Other: > Having shanks or threads with a diameter of 6 mm or more > Other: > Socket screws: > Other

    Parent subheading for dairy herd replacements
    7318.15.80.55

    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: > Threaded articles: > Other screws and bolts, whether or not with their nuts or washers: > Other: > Having shanks or threads with a diameter of 6 mm or more > Other: > Other: > With hexagonal heads: > Of stainless steel

    Parent subheading for dairy herd replacements
    7318.15.80.66

    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: > Threaded articles: > Other screws and bolts, whether or not with their nuts or washers: > Other: > Having shanks or threads with a diameter of 6 mm or more > Other: > Other: > With hexagonal heads: > Other: > Cap screws

    7318.15.80.69

    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: > Threaded articles: > Other screws and bolts, whether or not with their nuts or washers: > Other: > Having shanks or threads with a diameter of 6 mm or more > Other: > Other: > With hexagonal heads: > Other: > Other

    7318.15.80.82

    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: > Threaded articles: > Other screws and bolts, whether or not with their nuts or washers: > Other: > Having shanks or threads with a diameter of 6 mm or more > Other: > Other: > Other: > Of stainless steel

    7318.15.80.85

    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: > Threaded articles: > Other screws and bolts, whether or not with their nuts or washers: > Other: > Having shanks or threads with a diameter of 6 mm or more > Other: > Other: > Other: > Other

    View HTS reference

    Chapter & section notes

    Chapter notes

    Harmonized Tariff Schedule of the United States Revision 29 (2025) Annotated for Statistical Reporting Purposes CHAPTER 73 ARTICLES OF IRON OR STEEL XV 73-1 Notes 1. In this chapter the expression "cast iron" applies to products obtained by casting in which iron predominates by weight over each of the other elements and which do not comply with the chemical composition of steel as defined in Note 1(d) to chapter 72. 2. In this chapter the word "wire" means hot- or cold-formed products of any cross-sectional shape, of which no cross-sectional dimension exceeds 16 mm. Additional U.S. Notes 1. For the purposes of heading 7304 or 7306, the rate of duty "Free (C)" appearing in the "Special" subcolumn applies only to tubes and pipes with attached fittings, suitable for conducting gases or liquids. 2. For the purposes of subheading 7307.19.30, the expression "ductile fittings" refers to fittings which contain over 2.5 percent carbon and over 0.02 percent of magnesium or of magnesium and cerium, by weight. Statistical Note 1. For the purposes of statistical reporting numbers 7310.10.0005, 7310.29.0020 and 7310.29.0055, “refillable stainless steel kegs, whether or not pressurized” refers to cylindrical kegs for liquid beverages, each keg with a domed top and bottom and a single neck piece, designed for a coupler (valve) system and an extractor tube (spear) by which the keg can be cleaned, filled and dispense the liquid contents. Harmonized Tariff Schedule of the United States Revision 29 (2025) Annotated for Statistical Reporting Purposes XV 73-2

    Section notes

    SECTION XV BASE METALS AND ARTICLES OF BASE METAL XV-1 Notes 1. 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) Ferrocerium or other pyrophoric alloys (heading 3606); (c) Headgear or parts thereof of heading 6506 or 6507; (d) Umbrella frames or other articles of heading 6603; (e) Goods of

    Latest update

    Last updated

    November 15, 2025

    Revised every January & July

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