The 44HS45-01-1-04N is a Series 44 multi-deck rotary switch manufactured by Grayhill, designed for rugged industrial and military applications requiring reliable switching control. This switch features a 1-inch diameter with a 45-degree angle of throw, 1 amp contact rating, and non-shorting contact configuration, meeting MIL-S-3786/04 military qualification standards. The switch incorporates three decks with two poles per deck, providing flexible circuitry options with a 0.625-inch (15.88 mm) diameter bushing and integral assembly nut. Key dimensional specifications include a 0.375-inch (9.53 mm) shaft diameter, 0.437-inch (11.10 mm) stud projection, and a non-turn tab measuring 0.125 by 0.031 inches. The rugged construction ensures reliable operation throughout the equipment's service life, making it suitable for control panels, instrumentation systems, and military-grade switching applications where durability and precision are essential.