Hayward Micro Clear / Pro-Grid SS Nut, 5/16-18, ECX176865
No. 5 Image ECX176865 Hayward Filter Retainer Nut, 5/16in, 18 Used on Hayward Micro-Clear and Pro-Grid DE filters. Used on the Retainer Rod (aka Thru Bolt or Tie Rod), to tighten up the filter grid assembly. Stainless Steel Mates with SS Washer, pn ECX1109, sold separately. See More Hayward DE filter parts in our Filter Parts Department.