{"product_id":"countersink-1-3-8-apexx-brazed-diamond-1-1-2-tapered-rim-diameter","title":"APEXX Vacuum Brazed Countersink Core Bit – 1-3\/8 in., 1-1\/2 in. Tapered Rim, 5\/8 in.-11","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003cdiv class=\"intro\"\u003e\n    \u003cp\u003eThe APEXX Vacuum Brazed Countersink Core Bit is a 1-3\/8 in. diamond core bit with a 1-1\/2 in. tapered diamond rim and a 5\/8 in.-11 female thread, used to drill a hole and cut its countersink in one pass on an angle grinder or hand core drill. Ocean Diamond publishes it for dry or wet use on porcelain tile, ultra-compact surfaces, marble, engineered stone, granite and natural quartzite.\u003c\/p\u003e\n    \u003cp\u003eThis is the narrow-rim version of the 1-3\/8 in. bit. Ocean Diamond also makes a 1-3\/8 in. countersink with a 2 in. rim under a separate item number; the 1-1\/2 in. rim here leaves only a 1\/16 in. bevel each side of the hole, for a faucet or fixing hole that needs a small chamfer rather than a wide flared seat. The bit threads 5\/8 in.-11, so it is a hand-tool core bit, not a CNC tool: for a 1\/2 in. Gas CNC spindle use the APEXX CNC Blind-Hole Bit – 1\/4 in. (6.5 mm), 1\/2 Gas or an APEXX thin-wall CNC core bit instead.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"key-features\"\u003e\n    \u003ch3\u003eKey Features\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e1-3\/8 in. core bit diameter\u003c\/li\u003e\n      \u003cli\u003e1-1\/2 in. tapered rim diameter\u003c\/li\u003e\n      \u003cli\u003e5\/8 in.-11 female thread\u003c\/li\u003e\n      \u003cli\u003eVacuum-brazed diamond on both the barrel and the tapered rim\u003c\/li\u003e\n      \u003cli\u003eDrills the hole and cuts the countersink in one operation\u003c\/li\u003e\n      \u003cli\u003eDry or wet use\u003c\/li\u003e\n      \u003cli\u003eOcean Diamond materials: porcelain tile, ultra-compact surfaces, marble, engineered stone, granite, natural quartzite\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"ideal-for\"\u003e\n    \u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n    \u003cp\u003eFabricators and installers drilling 1-3\/8 in. faucet and fixing holes who want a light chamfer on the top edge so the hole does not chip when the hardware is fitted, especially in porcelain and ultra-compact where a sharp hole edge is fragile.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq\"\u003e\n    \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n      \u003ch4\u003eWhat is the difference between the two 1-3\/8 in. countersink bits?\u003c\/h4\u003e\n      \u003cp\u003eThe rim. This bit has a 1-1\/2 in. tapered rim for a small chamfer; Ocean Diamond's other 1-3\/8 in. countersink bit has a 2 in. rim for a wide flared seat. Both drill the same 1-3\/8 in. hole.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n      \u003ch4\u003eWhat thread is it?\u003c\/h4\u003e\n      \u003cp\u003e5\/8 in.-11 female, the standard angle-grinder and hand core-drill thread. It is not a 1\/2 in. Gas CNC bit.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n      \u003ch4\u003eWet or dry?\u003c\/h4\u003e\n      \u003cp\u003eOcean Diamond specifies dry or wet use. Water is recommended on porcelain and ultra-compact to keep the brazed rim cool.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n      \u003ch4\u003eWhich materials?\u003c\/h4\u003e\n      \u003cp\u003eOcean Diamond lists porcelain tile, ultra-compact surfaces, marble, engineered stone, granite and natural quartzite.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n      \u003ch4\u003eHow deep does it countersink?\u003c\/h4\u003e\n      \u003cp\u003eThe taper runs from the 1-3\/8 in. barrel out to 1-1\/2 in. at the rim, so the chamfer is about 1\/16 in. wide on each side. Plunge until the rim just touches the surface for a clean bevel.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Obsidian Industrial","offers":[{"title":"Default Title","offer_id":52427167826140,"sku":"OCD 22229-07006","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0841\/5713\/7116\/files\/06bb32f0-4fa4-4c99-b847-2c7c1da1d5c8.jpg?v=1788548858","url":"https:\/\/obsidian-industrial.com\/products\/countersink-1-3-8-apexx-brazed-diamond-1-1-2-tapered-rim-diameter","provider":"Obsidian Industrial","version":"1.0","type":"link"}