Guitar strings are classified under 920930, the dedicated strings subheading, which covers strings for all musical instruments. The non-piano string instrument parts subheading (920992) covers other parts and accessories — such as bridges, nuts, tuning pegs, and tailpieces — but not the strings themselves.

Pickups, preamps, and similar electronic components fitted to instruments to enable amplification are classified under 920994, which covers parts and accessories for electrically produced or amplified instruments. This applies even when the base instrument is acoustic, because the pickup's function is to enable electrical amplification.

Many tariff lines under this heading for goods of Chinese origin are subject to Section 301 measures. The applicable measure is line-specific, so importers should verify the current status of each 10-digit HTS number at the time of entry rather than assuming uniform treatment across the heading.