# United States tariff lines under HS 7318.15 > The United States tariff splits HS 7318.15 (threaded articles: Other screws and bolts, whether or not with their nuts or washers) into 28 national lines: 7318.15.20.10 (having shanks or threads with a diameter of less than 6 mm), 7318.15.20.20 (track bolts), 7318.15.20.30 (structural bolts), 7318.15.20.41 (right-angle anchor bolts) and 24 others. Source: https://border.bot/countries/united-states/hs-codes/731815 Last updated: 9 October 2026 [Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 73](https://border.bot/countries/united-states/hs-codes/73) / [7318.15](https://border.bot/countries/united-states/hs-codes/731815) ## Key facts - HS subheading: [7318.15](https://border.bot/hs-codes/731815) - National lines: 28 - Tariff: [United States](https://border.bot/countries/united-states) - Chapter: 73: Articles of iron or steel ## United States lines under 7318.15 The United States tariff splits HS 7318.15 (threaded articles: Other screws and bolts, whether or not with their nuts or washers) into 28 national lines: 7318.15.20.10 (having shanks or threads with a diameter of less than 6 mm), 7318.15.20.20 (track bolts), 7318.15.20.30 (structural bolts), 7318.15.20.41 (right-angle anchor bolts) and 24 others. - [7318.15.20.10](https://border.bot/countries/united-states/hs-codes/7318152010) 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. Duty (MFN): free - [7318.15.20.20](https://border.bot/countries/united-states/hs-codes/7318152020) 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. Duty (MFN): free - [7318.15.20.30](https://border.bot/countries/united-states/hs-codes/7318152030) 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. Duty (MFN): free - [7318.15.20.41](https://border.bot/countries/united-states/hs-codes/7318152041) 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. Duty (MFN): free - [7318.15.20.46](https://border.bot/countries/united-states/hs-codes/7318152046) 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. Duty (MFN): free - [7318.15.20.51](https://border.bot/countries/united-states/hs-codes/7318152051) 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. Duty (MFN): free - [7318.15.20.55](https://border.bot/countries/united-states/hs-codes/7318152055) 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. Duty (MFN): free - [7318.15.20.61](https://border.bot/countries/united-states/hs-codes/7318152061) 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. Duty (MFN): free - [7318.15.20.65](https://border.bot/countries/united-states/hs-codes/7318152065) 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. Duty (MFN): free - [7318.15.20.91](https://border.bot/countries/united-states/hs-codes/7318152091) 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. Duty (MFN): free - [7318.15.20.95](https://border.bot/countries/united-states/hs-codes/7318152095) 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. Duty (MFN): free - [7318.15.40.00](https://border.bot/countries/united-states/hs-codes/7318154000) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter (not including cap screws). Duty (MFN): free - [7318.15.50.30](https://border.bot/countries/united-states/hs-codes/7318155030) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Studs, Of stainless steel. Duty (MFN): free - [7318.15.50.51](https://border.bot/countries/united-states/hs-codes/7318155051) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Studs, Other, Continuously threaded rod, Of alloy steel. Duty (MFN): free - [7318.15.50.56](https://border.bot/countries/united-states/hs-codes/7318155056) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Studs, Other, Continuously threaded rod, Other. Duty (MFN): free - [7318.15.50.90](https://border.bot/countries/united-states/hs-codes/7318155090) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Studs, Other, Other. Duty (MFN): free - [7318.15.60.10](https://border.bot/countries/united-states/hs-codes/7318156010) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Other, Having shanks or threads with a diameter of less than 6 mm, Socket screws, Of stainless steel. Duty (MFN): 6.2% - [7318.15.60.40](https://border.bot/countries/united-states/hs-codes/7318156040) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Other, Having shanks or threads with a diameter of less than 6 mm, Socket screws, Other. Duty (MFN): 6.2% - [7318.15.60.70](https://border.bot/countries/united-states/hs-codes/7318156070) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Other, Having shanks or threads with a diameter of less than 6 mm, Other, Of stainless steel. Duty (MFN): 6.2% - [7318.15.60.80](https://border.bot/countries/united-states/hs-codes/7318156080) Threaded articles, Other screws and bolts, whether or not with their nuts or washers, Other, Having shanks or threads with a diameter of less than 6 mm, Other, Other. Duty (MFN): 6.2% - [7318.15.80.20](https://border.bot/countries/united-states/hs-codes/7318158020) 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. Duty (MFN): 8.5% - [7318.15.80.30](https://border.bot/countries/united-states/hs-codes/7318158030) 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. Duty (MFN): 8.5% - [7318.15.80.45](https://border.bot/countries/united-states/hs-codes/7318158045) 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. Duty (MFN): 8.5% - [7318.15.80.55](https://border.bot/countries/united-states/hs-codes/7318158055) 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. Duty (MFN): 8.5% - [7318.15.80.66](https://border.bot/countries/united-states/hs-codes/7318158066) 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. Duty (MFN): 8.5% - [7318.15.80.69](https://border.bot/countries/united-states/hs-codes/7318158069) 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. Duty (MFN): 8.5% - [7318.15.80.82](https://border.bot/countries/united-states/hs-codes/7318158082) 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. Duty (MFN): 8.5% - [7318.15.80.85](https://border.bot/countries/united-states/hs-codes/7318158085) 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. Duty (MFN): 8.5% ## In other countries No other national tariff on border.bot has live lines under 7318.15 yet. - [The Harmonized System text for 7318.15](https://border.bot/hs-codes/731815) - Previous subheading: [7318.14](https://border.bot/countries/united-states/hs-codes/731814) Self-tapping screws - Next subheading: [7318.16](https://border.bot/countries/united-states/hs-codes/731816) Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel ## Frequently asked questions ### How many national tariff lines does the United States tariff have under HS 7318.15? The United States tariff splits HS 7318.15 (threaded articles: Other screws and bolts, whether or not with their nuts or washers) into 28 national lines: 7318.15.20.10 (having shanks or threads with a diameter of less than 6 mm), 7318.15.20.20 (track bolts), 7318.15.20.30 (structural bolts), 7318.15.20.41 (right-angle anchor bolts) and 24 others. ## Sources and updates The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. This page was last updated on 9 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Official source files: - https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false Machine-readable: https://border.bot/countries/united-states/hs-codes/731815.json