Connect 35414 Brass Nut M8 x 1.25 x 13mm Hex 10pc

Brass 3/4" BSP Back Nut Wide Flanged Threaded Backnut

Connect 35415 Brass Nut M10 x 1.5 x 17mm Hex 10pc

Brass 1/2" BSP Back Nut Wide Flanged Threaded Backnut

Plumbsure Brass Flange Threaded Backnut (Dia)19mm

Plumbsure Brass Flange Male Nut (Dia)19mm

Plumbsure Brass Flange Threaded Nut (Dia)12.7mm

Plumbsure Brass Female Threaded Backnut (Dia)12.7mm, Pack of 2