M3786/13-0002 is a military-qualified multi-deck rotary switch manufactured by Grayhill, designed to meet MIL-DTL-3786/13 specifications for demanding applications. The switch features a 0.5" diameter with gold-plated contact system, offering multiple angle-of-throw options (30°, 36°, 45°, and 60°) and is rated for 1/4 amp at 115 Vac resistive or 6-28 Vdc resistive operation. Key electrical characteristics include a contact resistance of 50 milliohms maximum after 25,000 cycles, insulation resistance of 1,000 megaohms minimum between terminals and shaft, and dielectric strength of 500 Vac at atmospheric pressure. The switch is available in Series 08 and Series 09 configurations with multiple deck options, sealed and unsealed styles, and solder lug terminals, making it suitable for military, aerospace, and industrial control applications requiring proven reliability and environmental performance.