PUSH BUTTON SWITCH RUBBER PUSH BUTTON SWITCH is normally off. S.P.S.T. wo positions, off- momentary on. On with button depressed, Spring return to off. Silver contacts. Molded plastic insulator with a protective barrier between terminals. Mounting stem 5/8: - 32 diameter. 13/8: long. Fits panels up through 1" thick. M-407-03 black moisture propellent rubber button cover snaps over special face nut. individually boxed.