Special Features:

Two groves parallel w/holes, one 0.250 in. W, 0.071 in. Deep, one grove along edge 0.062 in. W, 0.031 in. Deep

Properties:

An insulator having flat surfaces, with or without holes, whose thickness does not exceed 25 percent of its length or width, whichever is smaller, and whose shape is other than round. Excludes insulator (1), spacer; insulator (1), washer; mounting pad, electrical-electronic component; plate, electrical shield; and terminal board.