{"product_id":"hertel-18012-countersink-1-4-in-90-degree-1-flute-hss","title":"Hertel 18012 Countersink 1\/4 in 90 Degree 1 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 18012 is a single-flute, high-speed steel countersink designed for deburring and chamfering operations on drilled holes. The 90-degree included angle and 1\/4-inch head diameter make it well-suited for creating clean, flush seat surfaces for flat-head fasteners in metal, plastic, and wood substrates. The straight cylindrical shank measures 1\/4 inch in diameter, allowing direct chuck mounting in standard drill presses, milling machines, and hand drills. Machinists, toolmakers, and fabricators use this countersink for light-duty production and maintenance applications where precise angular control is needed.\u003c\/p\u003e\n\u003cp\u003eThis countersink is appropriate for use in machine shops, fabrication facilities, and maintenance environments. The single-flute geometry reduces cutting forces and is particularly effective in softer metals and non-ferrous materials. Its compact 1\/4-inch head diameter suits smaller hole diameters where larger multi-flute countersinks would be oversized. The straight cylindrical shank provides reliable concentricity in standard collet or drill chuck setups.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e90-degree included angle for standard flat-head fastener seating\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch head diameter suited for small-diameter hole chamfering\u003c\/li\u003e\n  \u003cli\u003eSingle-flute design reduces cutting forces and minimizes chatter\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides durability across a range of materials\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank compatible with standard drill chucks and collets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard OEM-style single-flute countersink for use in drill presses, CNC mills, and hand drill applications requiring a 1\/4-inch straight cylindrical shank and 90-degree chamfer geometry.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis countersink is installed by machinists and fabricators using a standard drill chuck or collet. Secure the workpiece firmly before operation and set spindle speed appropriate to the workpiece material and tool diameter. Inspect the cutting edge before use and replace if chipping or dullness is observed. Always wear appropriate eye protection when operating rotary cutting tools.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 90 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112812\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 18012\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51730688672050,"sku":"18012","price":31.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/005c14171035e2628db4421ac6a7786e.jpg?v=1788721441","url":"https:\/\/voomisupply.com\/products\/hertel-18012-countersink-1-4-in-90-degree-1-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}