- One piece unglazed porcelain body with 1?8� IPS-27 NPS female bushing and set screw - The cap is keyed to the body to prevent rotation - Insulator assures isolation of the screw terminals - The screws are staked and backed out for fast and easy assembly - Standard screwshell is aluminum; brass or nickel-plated brass is also available - 660W, 250V - cULus Listed

