Heavy Duty Flange Nut 1/2-13
A 1/2-13 UNC heavy-duty flange nut of alloy steel with integrated washer base for high-torque applications in trucks and equipment. It qualifies under HTS 7318.16.00 as a threaded nut of iron or steel.
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 classified as spring washers due to flange
Flange design mimicking washer function may lead to washer headings.
If exclusively for motor vehicle suspension
Vehicle-specific nuts classify under Chapter 87 parts.
If in retail consumer packs under 1.5kg
Small retail packs of screws/bolts/nuts have statistical suffixes.
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 strength grade markings (e.g
• Grade 8) to support classification as heavy-duty
• Avoid common error of declaring as 'parts' without specifying threaded nut function
• For flange types, include engineering drawings if customs questions integrality
Related Products under HTS 7318.16.00
M8 Hex Nut
A standard hexagonal nut with M8 internal threading, made from carbon steel, used to secure bolts in machinery and construction. It falls under HTS 7318.16.00 as a threaded nut of iron or steel, matching the chapter's definition for such fasteners.
Nylon Insert Lock Nut M10
M10 lock nut with nylon insert for vibration resistance, made from steel, common in automotive and appliance assembly. Falls under HTS 7318.16.00 for threaded steel nuts.
prevailing Torque Lock Nut 1/4-20
1/4-20 prevailing torque lock nut deformed thread steel for vibration-prone environments. HTS 7318.16.00 threaded nut.
High Crown Hex Nut M20
M20 high crown hex nut steel for high-pressure applications. HTS 7318.16.00.
Slotted Nut 5/16-18
5/16-18 slotted steel nut for cotter pin security in machinery. HTS 7318.16.00.
Castle Nut 7/16-20
7/16-20 castle nut steel with drilled holes for safety wiring. HTS 7318.16.00.