Norgren 15020 series iso r nipple adaptors nickel plated brass bevelled threads norgren 150204838 this nipple adaptor is from the norgren 15 series of bsp and hose fittings the adaptor has iso r tapered threads and is manufactured from nickel plated brass suitable for use in compressed air systems norgren 150204838 iso r nipple adaptor r12 to r38 bevelled threads 15mm bore