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The OATEY PP83519 is an open cap nut toilet bolt set used to secure a toilet to its floor flange during installation or replacement. Each card includes two cap nuts sized at 2-3/8 inches, providing the fastening hardware needed to complete a standard toilet rough-in. Plumbers and experienced DIYers install these as part of a full toilet set or when replacing worn or corroded closet bolt hardware. The open cap design allows access to the nut for tightening while maintaining a finished appearance at the base of the toilet.
This toilet bolt set is suited for residential bathroom plumbing applications where a toilet is being installed or reset on a standard floor flange. The set comes packaged two per card, making it a direct replacement for missing or damaged cap nut hardware during toilet service calls or remodel work.
Designed as an OEM-style replacement cap nut set for standard residential toilet floor flange installations.
Installation is typically performed by a licensed plumber or qualified DIYer as part of a toilet set or reset. Shut off the water supply and remove all water from the bowl and tank before beginning any toilet removal or installation work. Hand-tighten cap nuts first, then snug with a wrench - avoid overtightening, which can crack the toilet base. Work should conform to applicable local plumbing codes and IPC guidelines.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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