9209.91 - Parts and accessories for pianos:

This category, HTS 9209.91, specifically enumerates parts and accessories exclusively designed for pianos. It encompasses a broad range of components that, while not forming the complete instrument themselves, are integral to its function and operation. This includes items such as keyboard mechanisms, damper mechanisms, pedals, and internal bracing structures. The defining characteristic for classification under this heading is the direct and intended application to pianos.

Within the broader heading of "Parts and accessories of musical instruments; metronomes, tuning forks and pitch pipes of all kinds," HTS 9209.91 differentiates itself from its siblings by its singular focus on piano-specific components. HTS 9209.92 pertains to parts and accessories for musical instruments of heading 9202 (string instruments, excluding pianos), while HTS 9209.94 covers those for instruments of heading 9207 (keyboard instruments, electric sound or visual signal-recording apparatus). HTS 9209.99 is a residual category for all other musical instrument parts and accessories not otherwise specified.

To further refine classification, HTS 9209.91 is divided into two subcategories: "Tuning pins" (9209.91.40.00) and "Other" (9209.91.80.00). Tuning pins are distinct metallic components crucial for holding string tension and facilitating pitch adjustment in pianos. The "Other" subcategory serves as a catch-all for any remaining piano parts and accessories that do not fall under the specific description of tuning pins, ensuring comprehensive coverage for all piano-related components.