The M3786/4-5339 is a military-qualified, single-shaft rotary switch from the Series 42/44 family, designed for reliable operation in demanding environments. Qualified under MIL-DTL-3786/4 (SR04-1), it is available with 30°, 36°, 45°, 60°, and 90° angles of throw and features solder lug terminals. Depending on the style, it is rated for an operating temperature range of -65°C to 85°C (unsealed) or -65°C to 125°C (sealed). The switch is constructed with robust diallyl phthalate components and silver alloy contacts, providing a mechanical life of 100,000 cycles and the ability to carry 10 amps continuously. Its rugged design, including low-level switching and shaft grounding capabilities, makes it ideal for critical aerospace, defense, and industrial control systems.