Adapter SKINDICHT® MA-PG/M 21/20X1.5 FLAT, adapter, internal thread: M 20, external thread: PG 21, nickel-plated brass, areas of application: withstands high chemical and mechanical stress, suitable for outdoor use, for applications in which different thread types are used, benefits: withstands temperatures up to +200 °C, article numbers ending in 'LF' are lead-free product alternatives with otherwise identical product properties. 'Lead-free' articles do not contain lead, which is currently permitted to make up up to four percent in copper alloys, but could be banned in the future according to the RoHS directive, enables easy transition from a PG external thread to a metric internal thread, available for thread sizes up to PG36 or up to M40, form A in a non-slip knurled design for easy screwing in of the adapter even in oily environments, form B in a smooth design