Bourns 500K, 3/8" Long Shaft Potentiometer - Linear Taper

Upgrade your guitar’s control feel and reliability with the Bourns 500K long shaft linear potentiometer, a premium-grade component trusted by builders, techs, and OEM manufacturers worldwide. Designed for precision and durability, this pot delivers a smooth, consistent response across its full rotation—ideal for players who demand accurate control over volume or tone without sudden jumps or uneven taper.

The 500K resistance value is commonly paired with humbucker pickups, helping preserve high-end clarity while allowing full tonal range when rolling back. Unlike lower-value pots that can darken your sound, a 500K pot maintains brightness and articulation, making it a go-to choice for LP-style guitars and modern high-output setups.

Featuring a linear taper (B taper), this potentiometer provides a direct, even change in resistance throughout the turn. This makes it particularly well-suited for applications where predictable, uniform adjustment is needed—such as tone controls or players who prefer a more gradual and controlled volume sweep.

The long shaft design is specifically suited for guitars with thicker tops, including carved-top Les Paul-style bodies, where standard short shaft pots won’t provide enough thread for secure mounting. The extended threaded bushing ensures proper fitment through thicker control cavities, while maintaining a clean and professional installation.

Built to the high standards expected from Bourns, these potentiometers feature robust internal construction, low rotational torque for a smooth feel, and excellent lifespan under regular use. They are also known for low noise operation, reducing crackle and signal degradation over time compared to lower-quality alternatives.

Key Features:

• 500K resistance – Ideal for humbuckers, preserving clarity and high-end
• 3/8" Shaft diameter – Imperial sizing, perfect to replace CTS Potentiometers 
• Linear taper (B) – Smooth, consistent control response
• Long shaft design – Perfect for carved-top and thick-body guitars
• Low noise performance – Clean signal with minimal crackle
• Durable construction – Built for longevity and consistent use
• Smooth rotation – Professional feel with controlled resistance

Applications:

• Volume or tone controls in humbucker-equipped guitars
• LP-style and carved-top instruments requiring long shaft pots
• Custom wiring harnesses and upgrades
• Guitar repairs, builds, and premium component replacements

Fitment Note:

Please confirm shaft length, thread diameter, and control cavity depth before purchase. Long shaft potentiometers are typically required for carved-top guitars, while flat-top guitars may require short shaft variants.