M20 x 250mm High Strength Hex Cap Screw Grade 10.9
Metric high-strength friction grip cap screw M20 diameter x 250mm length, Grade 10.9, black oxide finish for bridge and tower construction. Hex head with bearing face for precise torque. Classifies as HTS 7318.15.80.66 cap screw with large shank/thread diameter.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other head types like round or mushroom
Non-hex, non-socket heads fall into 'other' head style suffixes.
If specialized structural fittings
Certain engineered structural assemblies move to Chapter 73 fittings.
If parts of cranes or excavators
End-use in specific machinery dictates Chapter 84 classification.
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
• Preload/torque certification needed for structural engineering approvals
• Declare black oxide as finish only; doesn't affect base steel classification
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