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.
Import Duty Rates by Country of Origin
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 diameter less than 6 mm
Statistical break at 6 mm separates finer machine screws from structural bolts.
If sold as threaded components of a machine set
Machinable iron/steel threaded articles for further manufacturing classify in 7317.
If welded into pipe fittings
Threaded pipe nipples or fittings move to Chapter 73 tube/pipe fittings heading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Label strength grade (e.g
• 8.8) and exact dimensions on packaging to comply with ASTM/ISO standards
• Provide supplier affidavits confirming no alloy steel exceeding limits for base Chapter 73 rates
• Watch for reclassification if sold in retail packs under 7318.15.2095 statistical suffix
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 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.
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.
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.