Alpha Audio Taper potentiometer. These pots have a metric thread and are often found in many Japanese, and non-US made guitars. Being a metric thread, the shaft is a little narrower than the CTS pots, so they fit smaller drilled control plates, and mounting holes. Metric thread: M8 x .75 7.8mm diameter brass threaded collar (import size, smaller than USA spec versions). 18 spline aluminium split shaft (coarse). Includes 1x nut and 1x dress washer. Dimensions: The brass threaded collar is 9.5mm long. Total length of the shaft to the top of the spline is 18mm. Split shaft diameter : 6mm. Pot casing diameter : 24mm. Which Ohm value should you choose?500k pots are the standard volume and tone controls for humbuckers, and 250k's are usually used for single-coil pickups. A 250k gives a slightly warmer tone than a 500K by sending more of the high-frequencies in the circuit to ground.
