C Fisher, I am pretty sure that it is a coated zinc screw but you'll will have to check with Hayward to confirm. That is not normal for those screws to rust in such a short period of time. Do you have a chlorinator plumbed in? if so, It might be back flowing in to your filter. But if your have anything corrosive like a salt system or Chlorinator. You may want to get a check valve to fix that and prolong the life of your system.
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Yes, that is correct. These are sold individually.
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The $5.99 price has been updated to $2.99 per screw.
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Hi, Amaris. This item is priced per screw.
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These are $2.99 per screw.
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