A325 High-Strength Structural Bolts
A325 structural bolts are high-strength hex head bolts designed for steel-to-steel structural connections in buildings and bridges, with a shank diameter of 6 mm or more and typically supplied with matching nuts and washers. They fall under HTS 7318.15.20.30 as structural bolts due to their use in load-bearing structural applications and compliance with ASTM specifications for tensile strength.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically for structural use
Non-structural bolts with 6mm+ diameter fall under the general 'other' category for machine or assembly use.
If shank or thread diameter under 6 mm
Smaller diameter bolts are classified separately regardless of structural intent.
If imported as pre-assembled components in structures
Bolts incorporated into finished steel structures shift to Chapter 73 headings for structures.
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Import Tips & Compliance
• Verify ASTM A325 certification and provide mill test reports (MTRs) to confirm material grade and mechanical properties for customs compliance
• Ensure bolts, nuts, and washers are entered together in the same shipment to qualify under this subheading; separate shipments may reclassify
• Check for anti-dumping duties on certain steel bolts from specific countries and label with country of origin clearly
Related Products under HTS 7318.15.20.30
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 HTS 7318.15.20.30 for their structural designation and shipment with fasteners.
ASTM F3125 Grade A325 Bolts
Updated standard ASTM F3125 Grade A325 bolts replace older A325 specs, used in structural framing with 6 mm+ diameters and shipped as sets with nuts and washers for earthquake-resistant buildings. HTS 7318.15.20.30 applies to these designated structural fasteners.
Heavy Hex Structural Bolts A325M Metric
Metric A325M heavy hex structural bolts with shanks 12 mm and larger for international bridge projects, including nuts and hardened washers for pre-tensioned connections. Qualifies under HTS 7318.15.20.30 as structural bolts shipped together.
A354 Grade BD Structural Bolts
A354 Grade BD alloy bolts for high-pressure structural joints in refineries and towers, diameter 6 mm+, with heavy nuts for flanged connections. HTS 7318.15.20.30 covers these as structural bolts with accompanying fasteners.
F1554 Anchor Structural Bolts
ASTM F1554 Grade 36 anchor bolts embedded in concrete for structural steel columns, with 1 inch (25.4 mm) diameter rods threaded at ends, shipped with nuts. HTS 7318.15.20.30 for structural bolts over 6 mm.
SAE J429 Grade 8 Structural Bolts
SAE J429 Grade 8 high-strength bolts adapted for structural chassis in heavy equipment, 6 mm+ diameter with nuts for frame connections. Falls under HTS 7318.15.20.30 as structural when shipped in sets.