Pack of 50 WXD3 13 3590S precision rotary potentiometers with a 6.35 mm (1/4 in) shaft. Key benefits Accurate, repeatable adjustments: designed for precise trimming and control so settings stay where you set them. Secure locking knob: locks the shaft to prevent accidental changes from shock, vibration, or movement during transport and operation. Protected shaft: includes a cover that shields the shaft and helps keep dust and debris out, extending service life. Broad compatibility: 6.35 mm (1/4 in) shaft fits standard knobs and panel mounts, making these potentiometers easy to integrate into existing panels and prototypes. Reliable in demanding environments: engineered for consistent performance in calibration, measurement, and control tasks. What this solves Eliminates drift and accidental setting changes with a positive lock for stable, repeatable positions. Reduces maintenance and contamination risk thanks to the protective shaft cover. Simplifies installation and replacement by matching common knob and panel mounting standards. Key attributes Quantity: 50 pieces Model: WXD3 13 3590S Shaft diameter: 6.35 mm (1/4 in) Function: rotary potentiometer with locking knob and protective cover Compatibility: standard knobs and panel mounts; suitable for calibration and control systems Practical applications Laboratory calibration rigs: precise trimming and repeatable adjustments for test equipment and calibration setups. Audio and instrumentation: fine-tune signal paths and control circuits where stable settings are required. Prototyping and robotics: integrate into control panels or prototype boards that need reliable manual adjustment and protection against vibration. Why choose these units Consistent performance across all 50 pieces for batch builds or multiple stations Locking feature and protective cover reduce downtime and rework Standard shaft size minimizes the need for custom knobs or adapters Includes 50 WXD3 13 3590S potentiometers with 6.35 mm (1/4 in) shafts, each fitted with a locking knob and protective cover for immediate use in calibration, measurement, and control applications.