Pentair Retainer Nut, 15/16 in SS, Fits Nautilus NS/NSP and FNS, 192013
No. 31 Image 192013 PAC-FAB FNS Nut Used on Pac Fab (Pentair) Nautilus, Nautilus Plus and FNS DE pool filters. Does Not Fit FNS Plus filters. Use four (4) per filter to tighten up the through bolts. 192013 and other Nautilus pool filter parts are in our parts department.