The 42A36-01-1-05N is a multi-deck rotary switch from Grayhill's Series 42 designed for rugged industrial and military applications requiring reliable switching control. This switch features a 1-inch diameter with a 1 amp current rating, standard fixed stop configuration, and is MIL-S-3786/04 qualified for military use. The switch incorporates a 3/8-32 UNEF-2A threaded shaft with integral assembly nut, non-turn tab dimensions of 0.125 ± 0.003 inches wide by 0.031 ± 0.003 inches thick, and a bushing keyway of 0.066 ± 0.002 inches wide by 0.036 ± 0.003 inches deep. With rugged construction, multiple circuitry options, and available features including shaft/panel seal, adjustable stops, and PC termination, this switch ensures reliable operation throughout the equipment's service life in demanding environments.