{"product_id":"haywardclampnutboltdex2421j2hppdex2421j2","title":"Hayward Clamp Nut \u0026 Bolt | DEX2421J2","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward DEX2421J2 Clamp Nut \u0026amp; Bolt Kit (Replacement Hardware for Filter Clamp Ring)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eDEX2421J2\u003c\/strong\u003e is an OEM \u003cstrong\u003eclamp nut and bolt kit\u003c\/strong\u003e used to tighten and secure the clamp band that holds\n    the \u003cstrong\u003eupper and lower tank halves\u003c\/strong\u003e together on compatible Hayward filters. If your clamp hardware is rusted, stripped, missing,\n    or won’t tighten smoothly, replacing this nut\/bolt set helps restore a \u003cstrong\u003esecure, leak-resistant clamp connection\u003c\/strong\u003e.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eSwimClear\u003c\/strong\u003e cartridge filters (commonly listed across multiple SwimClear models depending on revision)\u003c\/li\u003e\n    \u003cli\u003eHayward \u003cstrong\u003ePro-Grid\u003c\/strong\u003e vertical grid D.E. filters: \u003cstrong\u003eDE2420\u003c\/strong\u003e, \u003cstrong\u003eDE3620\u003c\/strong\u003e, \u003cstrong\u003eDE4820\u003c\/strong\u003e, \u003cstrong\u003eDE6020\u003c\/strong\u003e, \u003cstrong\u003eDE7220\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eAlso commonly referenced for certain Hayward clamp systems used on select sand filter configurations (verify by parts diagram)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat It Does\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eProvides the \u003cstrong\u003etightening bolt and nut\u003c\/strong\u003e used to tension the filter’s clamp ring\u003c\/li\u003e\n    \u003cli\u003eHelps maintain even clamp pressure so the \u003cstrong\u003etank seal\u003c\/strong\u003e can seat properly\u003c\/li\u003e\n    \u003cli\u003eRestores clamp function after corrosion, thread damage, or missing hardware\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e(1) Clamp bolt\u003c\/li\u003e\n    \u003cli\u003e(1) Clamp nut\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e This kit is the \u003cstrong\u003ebolt and nut only\u003c\/strong\u003e. If you need the full clamp system (clamp ring + seal + hardware),\n    look for the complete clamp kit for your filter model.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off the pump\u003c\/strong\u003e and fully relieve filter pressure at the air relief before loosening\/tightening the clamp.\u003c\/li\u003e\n    \u003cli\u003eClean the clamp band and tank flange area—grit can cause uneven clamping and leaks.\u003c\/li\u003e\n    \u003cli\u003eTighten smoothly and evenly per the filter manufacturer’s instructions (do not overtighten).\u003c\/li\u003e\n    \u003cli\u003eIf the seam still seeps, inspect\/replace the \u003cstrong\u003etank seal\u003c\/strong\u003e and check for flange damage or warping.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=DEX2421J2\"\u003eHayward DEX2421J2 Clamp Nut \u0026amp; Bolt (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=DEX2421JKIT\"\u003eHayward DEX2421JKIT Complete Clamp System Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=DEX2422Z2\"\u003eHayward Metal-Reinforced Tank Seal (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=DE4820%20parts\"\u003eHayward Pro-Grid DE4820 Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=C4030%20parts\"\u003eHayward SwimClear C4030 Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=silicone%20pool%20lube\"\u003eSilicone O-Ring \u0026amp; Gasket Lubricant (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eNever work on a filter clamp while the system is pressurized—always shut the pump off and bleed air first.\u003c\/li\u003e\n    \u003cli\u003eInspect clamp hardware each time you open the filter; replace any stretched, corroded, or damaged fasteners early.\u003c\/li\u003e\n    \u003cli\u003eKeep the tank seal clean and lightly lubricated with silicone-based lube to improve resealing and reduce pinching.\u003c\/li\u003e\n    \u003cli\u003eIf you repeatedly need to overtighten to stop seepage, replace the tank seal and inspect flange surfaces instead of forcing the clamp.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":46797878591663,"sku":"DEX2421J2","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/hayward-clamp-nut-bolt-dex2421j2-pool-filter-parts-5259483.jpg?v=1777068628","url":"https:\/\/freshized.com\/products\/haywardclampnutboltdex2421j2hppdex2421j2","provider":"Freshized","version":"1.0","type":"link"}