DN15 (1/2" NB) BSP 150# (MXF) CONE SEAT UNION SS 316

Side One Thread: 1/2" BSPP Female
Suits an outside diameter (OD) of: 21.3mm
Side Two Thread: 1/2" BSPT Male
Suits an outside diameter (OD) of: 21.3mm
Material: Stainless
Grade: 316

Alternative terminology:
Male x Female, MF, MXF, Union, Threaded, Screwed, Street Union