The 3306F-1-504 is a 6 mm round single-turn Trimpot trimming potentiometer manufactured by Bourns, designed for industrial open-frame applications requiring precision resistance adjustment. This cermet-element potentiometer features a 500 kO standard resistance value with ±25% tolerance, an adjustment angle of 215° nominal, and essentially infinite resolution for fine tuning. It operates over a temperature range of -25°C to +100°C with a temperature coefficient of ±250 ppm/°C, and is rated for 0.2 watts at 70°C with a maximum operating torque of 4.5 oz-in. The device includes dust and splash-resistant covers, cross-slot adjustment options, and both horizontal and vertical mounting styles with PC board stand-offs, making it suitable for circuit calibration, signal conditioning, and equipment tuning in industrial and commercial electronics.