A490 Alloy Structural Bolts
A490 bolts are quenched and tempered alloy steel structural bolts for high-load applications like bridges and towers, featuring diameters from 1/2 inch (12.7 mm) and above, often shipped with heavy hex nuts. Classified under tariff item 7318.15.00 for other screws and bolts of iron or steel.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If nuts are imported separately
Nuts are classified under tariff item 7318.16.00.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the diameter is 6 mm or more and the set includes heavy hex nuts
• Provide ASTM A490 certification for customs
• Declare the structural application for accurate classification
Related Products under Tariff item 7318.15.00
10 mm Solar Panel Mounting J-Bolt
Solar panel mounting J-bolts are 10 mm diameter bolts with a J-shape, shipped with nuts for racking solar panels to roof trusses. They are threaded articles of iron or steel, exceeding 6 mm in diameter, and are classified under tariff item 7318.15.00 as other screws and bolts. The UV-resistant coating protects against outdoor exposure.
12.9 Alloy Steel Hex Bolt M16 with Heavy Hex Nut and Hardened Washer
A metric Class 12.9 alloy steel heavy hex bolt with matching heavy hex nut and hardened flat washer, designed for high-stress applications. The set is imported together and falls under tariff item 7318.15.00 as other screws and bolts of iron or steel, whether or not with their nuts or washers.
1/2 Inch L-Bolt with Flat Washers
L-shaped bent bolts with a 12.7 mm (1/2 inch) diameter and black oxide finish are shipped with zinc-plated flat washers for machinery bases and equipment. They are threaded articles of iron or steel, exceeding 6 mm in diameter, and are classified under tariff item 7318.15.00 as other screws and bolts. The black oxide finish provides mild corrosion resistance.
1/2 Inch Log Home L-Anchor Bolt
Log home L-anchor bolts with a 1/2 inch diameter are shipped with nuts for anchoring sill plates to foundations. They are threaded articles of iron or steel, exceeding 6 mm in diameter, and are classified under tariff item 7318.15.00 as other screws and bolts. The L-shape is designed for secure anchoring in log home construction.
1/4-20 UNC Grade 5 Bolt Nut Washer Kit
An imperial-sized Grade 5 zinc-plated steel bolt with a nut and washer, packaged as a matched set for structural applications. This set is classified under tariff item 7318.15.00 as other screws and bolts of iron or steel, whether or not with their nuts or washers.
1 inch Heavy Duty Track Bolt Kit
Heavy-duty 1-inch diameter track bolt complete with nut and washer, made from carbon steel for high-load railroad applications. The bolt has an oval neck to prevent turning and threads over 6 mm for secure fastening of rails. This falls under tariff item 7318.15.00 for other screws and bolts of iron or steel.