M18 Structural Bolt A325

High-strength A325 steel bolt with M18 threads for steel building frameworks, heavy tension connections. Diameter 18 mm exceeds 6 mm threshold. HTS 7318.15.80 covers these other large bolts.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China8.5%+35.0%43.5%
🇲🇽Mexico8.5%+10.0%18.5%
🇨🇦Canada8.5%+10.0%18.5%
🇩🇪Germany8.5%+10.0%18.5%
🇯🇵Japan8.5%+10.0%18.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7318.15.60Lower: 41.2% vs 43.5%

If finish cap screws in structural sets

Specific structural fastener types have statistical breaks.

7308.90Lower: 10% vs 43.5%

If built-up into beam connectors

Assembled steel structures classify under fabricated articles.

7301.20Lower: 10% vs 43.5%

If alloy medium/high carbon content

Material composition exceeding carbon limits shifts to 7301 angles.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Provide ASTM A325 certification; affects duty but not base HTS

Declare tension proof load capacity in entry summary

Ensure no confusion with A490 alloy types requiring special review

Related Products under HTS 7318.15.80

M10 Hex Head Cap Screw

A fully threaded steel bolt with a hexagonal head, featuring an M10 thread diameter of 10 mm, used for heavy-duty fastening in machinery and construction. It falls under HTS 7318.15.80 due to its shank/thread diameter exceeding 6 mm and classification as an other screw or bolt of iron or steel. Often sold with matching nuts and washers for secure assembly.

Grade 8.8 M12 Carriage Bolt

A round-head steel carriage bolt with square neck and M12 (12 mm) threads, ideal for woodworking and structural applications where rotation prevention is needed. Classified in HTS 7318.15.80 for its large shank diameter and status as an other bolt of iron or steel. Typically includes nut for through-bolting.

Grade 10.9 M10 Eye Bolt

Forged steel eye bolt with M10 threaded shank (10 mm) and closed eye for lifting and rigging applications. High-tensile grade 10.9 for overhead loads. HTS 7318.15.80 for large shank threaded articles.

M14 Plow Bolt

Counterbored flat head bolt with M14 (14 mm) threads for agricultural and earth-moving equipment wear parts. Prevents spin-out under vibration. HTS 7318.15.80 for large shank other bolts.

M16 U-Bolt

Semi-circular threaded rod bent into U-shape with M16 parallel threads (16 mm diameter) for pipe clamps and suspension systems. Double-ended for nuts. HTS 7318.15.80 as large threaded other article.

M12 Step Bolt

Utility pole step bolt with 12 mm shank, hex head, and tapered point for lineman climbing irons. Hot-dip galvanized steel. Classifies under HTS 7318.15.80 for >6 mm threaded bolts.