The 42 series PC mount Multi-deck Rotary Switch has extremely rugged construction and virtually limitless configurations. It has watertight sealed to the mounting panel by utilizing the panel seal kit. It is built with a front plate that does not have a non-turn tab. It is qualified to MILDTL-3786/4, specifically SR04-1, qualification includes two temperature ranges. Unsealed styles M, MB, MG and MBG are qualified for -65 to 85°C. Unsealed styles H, HB, HG and HBG, plus sealed styles HS, HBS, HGS and HBGS are qualified for -65°C to 125°C. Qualification includes low level switching and shaft grounding as specified in MIL-DTL-3786. Qualification includes30°, 36°, 45°, 60°and 90° angles of throw with solder lug terminals. The military styles are dimensionally the same as the standard styles with two exceptions. The location of the common for the 3-pole switch differs and the non-turn tab for styles HS, HBS, HGS and HBGS differs per the shaft and panel seal.