9802.00.60.00

Any article of metal (as defined in U.S. note 3(e) of this subchapter) manufactured in the United States or subjected to a process of manufacture in the United States, if exported for further processing, and if the exported article as processed outside the United States, or the article which results from the processing outside the United States, is returned to the United States for further processing

Duty rates

General (MFN): A duty upon the value of such processing outside the United States (see U.S. note 3 of this subchapter)
Special programs: Free (AU,BH,CL,CO,IL,JO,KR,MA,OM,P,PA,PE,SG) A duty upon the value of such processing outside the United States (see U.S. note 3 of this subchapter) (B,C)
Column 2 (non-MFN): A duty upon the value of such processing outside the United States (see U.S. note 3 of this subchapter)

“General” applies to imports from most trading partners under normal trade relations. “Special” lists products eligible for reduced or duty-free treatment under programs like GSP, USMCA, CAFTA-DR, or individual free-trade agreements. “Column 2” applies to imports from countries without normal trade relations (currently Cuba and North Korea).

Chapter 98

Special classification provisions (Section XXII — Special classification and temporary provisions)