The HellermannTyton 166-30414 SC20-SM-PG16 is a Brass Connector for Metallic Conduit from the SC-SM Series. The connector has a swivel external PG16 thread and comprises of two parts, the shell and the body. The connectors have been nickel plated. * Two-part fitting of shell and body with external thread * External thread swives about main body * Provides tight, reliable hold of conduit * Can be secured with locknut * Inside diameter: 16.9mm * Supplied singly * Supplied in nickel plate * Nominal diameter: 20mm * Thread type: PG16 * Type: SC-SM * Manufacturer's part: 166-30414 Please Note: Locknuts must be purchased separately (see order codes 49-6636 to 49-6650 or https://www.rapidonline.com/hellermanntyton-nickel-plated-brass-locknut-alnpb-series-532759)