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    7318.15.20

    Bolts and bolts and their nuts or washers entered or exported in the same shipment

    This code covers bolts, screws, nuts, and similar articles of iron or steel, specifically those entered or exported together as a set. Use this code when classifying these fasteners—whether under 6mm or over, with various features like head shape and material—for import or export purposes, noting that most standard trade partners enjoy free duty treatment.

    Bolts and bolts and their nuts or washers entered or exported in the same shipment

    Detailed information for HTS Code 7318.15.20

    AI Summary

    This tariff code falls within Chapter 73 of the Harmonized Tariff Schedule, which covers articles of iron or steel. Specifically, code 7318.15.20 covers bolts, screws, nuts, and similar articles of iron or steel, when shipped together with their nuts or washers. Numerous subdivisions exist within this code, categorized by diameter, type (like track or structural bolts), and head shape, allowing for increasingly specific classification of the items being imported or exported. When reporting, select the appropriate statistical suffix based on these detailed characteristics, such as diameter (less than 6mm or 6mm or more), bolt type, and material (stainless steel versus other).

    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

    Free

    Standard trade partners (NTR)

    Special Duty

    N/A

    Eligible FTA or preference programs

    The general duty rate for HTS code 7318.15.20 and all its subdivisions is Free, meaning no duty is assessed on imports from standard trade partners. Special rates are not specified, but eligibility for Free rates under specific FTA or preference programs may apply. All reporting must be done in kilograms (kg). This means that regardless of the specific type of bolt or screw within the subdivisions (e.g., 7318.15.20.10, 7318.15.20.20, etc.), imports are generally duty-free unless subject to specific restrictions or originating from a country not considered a standard trade partner, in which case the general rate applies.

    Rate of Duty (Column 2): 3.50%

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    Code subdivisions

    7318.15.20.10

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of less than 6 mm

    Parent subheading for dairy herd replacements
    7318.15.20.20

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Track bolts

    7318.15.20.30

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Structural bolts

    Parent subheading for dairy herd replacements
    7318.15.20.41

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Bent bolts: > Right-angle anchor bolts

    7318.15.20.46

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Bent bolts: > Other

    Parent subheading for dairy herd replacements
    7318.15.20.51

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Other: > With round heads: > Of stainless steel

    7318.15.20.55

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Other: > With round heads: > Other

    7318.15.20.61

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Other: > With hexagonal heads: > Of stainless steel

    7318.15.20.65

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Other: > With hexagonal heads: > Other

    7318.15.20.91

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > Other: > Other: > Of stainless steel

    7318.15.20.95

    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: > Bolts and bolts and their nuts or washers entered or exported in the same shipment > Having shanks or threads with a diameter of 6 mm or more: > 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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