{"product_id":"dormer-pramet-5973206-solid-pilot-counterbore-0-2561in-3-flute-hss","title":"Dormer Pramet 5973206 Solid Pilot Counterbore 0.2561in 3 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe DORMER PRAMET 5973206 is a solid pilot counterbore designed for precise enlarging and finishing of drilled holes to accept fastener heads, dowels, and similar hardware. Built from high speed steel, this 3-flute tool delivers clean, concentric cuts in a range of workpiece materials. It features a 0.2561-inch cutting diameter and a 0.134-inch integral pilot that registers in the existing hole to maintain accurate alignment. The 0.197-inch shank diameter fits standard machine tool holders, and the 2.8-inch overall length suits most benchtop and floor-standing drill press and milling setups.\u003c\/p\u003e\u003cp\u003eThis counterbore is suited for machine shops, maintenance and repair operations, and production environments where precise bolt-hole finishing is required. It is appropriate for use in manual drill presses, milling machines, and CNC machining centers when used with a compatible holder. The integral pilot design eliminates the need for separate pilot pins, reducing setup time and part count during high-volume or repetitive counterboring operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.2561-inch cutting diameter for accurate fastener seat sizing\u003c\/li\u003e\n\u003cli\u003e0.134-inch solid integral pilot for self-centering alignment\u003c\/li\u003e\n\u003cli\u003e3-flute geometry supports smooth chip evacuation and consistent finish\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for durability across general-purpose materials\u003c\/li\u003e\n\u003cli\u003e0.197-inch shank diameter fits standard tool holders\u003c\/li\u003e\n\u003cli\u003e2.8-inch overall length accommodates common drill press and milling setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use solid pilot counterbore for standard drill press, milling machine, and CNC machining center applications requiring a 0.2561-inch counterbore diameter with a 0.134-inch pilot.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and operation should be performed by a qualified machinist familiar with rotating cutting tools. Secure the shank firmly in a compatible collet or chuck before use, and ensure the workpiece is clamped to prevent movement. Always set spindle speed appropriate to the workpiece material and tool diameter per standard machining practice before engaging the cut. Inspect the pilot and cutting edges for wear or damage before each use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.2561 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 0.134 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.197 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Length\u003c\/strong\u003e: 2.83 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 0.71 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 0.71 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: DORMER PRAMET\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5973206\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DORMER PRAMET","offers":[{"title":"Default Title","offer_id":68300428673330,"sku":"5973206","price":47.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d790ea7ed206a0dc8801cea523601933.jpg?v=1793716365","url":"https:\/\/voomisupply.com\/products\/dormer-pramet-5973206-solid-pilot-counterbore-0-2561in-3-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}