The Mencom MAC-3FR-2-SC Micro AC (1/2-20) female straight receptacle features a 3 Pin insert and 1/2" NPT mounting thread. The shell is clear anodized aluminum with gold plated copper alloy contacts. Rated at 300V & 4 A. Rated IP 69. Operating temperature -40 C to 105 C (-40 F to 221 F). Mencom MAC receptacles have an 1/2-20 coupling nut with a dual C-coded keyway.