12.9 Alloy Steel Hex Bolt M16 with Heavy Hex Nut and Hardened Washer
Metric Class 12.9 alloy steel heavy hex bolt with matching heavy hex nut and hardened flat washer for high-stress applications. Shipped as set under HTS 7318.15.20.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If turbine components
High-strength bolts for turbo machinery classify as parts.
If wire-formed
If cross-section ≤16mm wire-formed, may be Chapter 73 wire articles.
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Import Tips & Compliance
• Class 12.9 requires tensile strength certification (min 1220 MPa)
• Heavy hex proportions per DIN/ISO standards must be documented
• Alloy composition affects potential Section 232 duties
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