The 71BSF36-04-1-06N is a multi-deck rotary switch from Grayhill's Series 71 line, featuring a 0.5–0.75" diameter body with molded-in position terminals and a 1/4 amp contact rating. This switch offers a choice of shaft/bushing diameters (0.125" or 0.250") and selectable angles of throw (30° or 36°), with up to 12 decks available for complex switching configurations. The unit is military qualified to MIL-DTL-3786/39 and provides non-shorting contact operation with fixed or continuous rotation options. Key dimensional specifications include a 0.687" ± 0.015" body diameter, 1/4-32 UNEF-2A or 3/8-32 UNEF-2A threaded bushing depending on shaft style, and stud projection dimensions that vary with deck count. These switches are widely used in industrial control panels, test equipment, and military applications where reliable multi-position switching and compact form factor are essential.