Keystone Electronics Corp. TO-3 Transistor Insulator 4661

CAT. NO. 4661 is a molded transistor insulator for TO-3 cases, made of nylon 6/6 with a UL 94V-2 rating, featuring a 0.140 inch diameter hole for the transistor case and two 0.050 inch diameter mounting holes. The overall dimensions are 1.562 inches in length with a width of 0.425 inches, designed to provide electrical isolation while allowing thermal transfer through the mounting interface.