{"product_id":"hertel-h-81186040600-combo-drill-countersink-size-4-cobalt","title":"Hertel H-81186040600 Combo Drill Countersink Size 4 Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL H-81186040600 is a combination drill and countersink tool designed for simultaneous drilling and countersinking in a single operation. Built from cobalt high-speed steel, it delivers strong heat and wear resistance in demanding production and fabrication environments. The tool features a 5\/16 inch body diameter, a 118-degree drill point angle, and a 60-degree included angle for countersinking. At 6 inches overall length, it is classified as a long-length tool. The bright polished finish reduces friction and aids in chip evacuation. Machinists and metalworking professionals use this tool in drill presses, CNC machining centers, and manual mills.\u003c\/p\u003e\u003cp\u003eThis combo drill countersink is suited for metalworking applications where a pilot hole and countersink must be produced in one pass. It is commonly used in sheet metal fabrication, structural steel work, and general machine shop operations. The plain cutting edge style and non-tapered, non-insertable design make it a straightforward, solid-body tool. It is appropriate for use on ferrous and non-ferrous metals where cobalt tooling provides an advantage over standard high-speed steel.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt construction for improved heat resistance and tool life in hard materials\u003c\/li\u003e\n\u003cli\u003e118-degree drill point angle for general-purpose metal drilling\u003c\/li\u003e\n\u003cli\u003e60-degree included angle for standard countersink geometry\u003c\/li\u003e\n\u003cli\u003e5\/16 inch body and point diameter for consistent sizing through the cut\u003c\/li\u003e\n\u003cli\u003e1\/8 inch drill point length with 6 inch overall length for extended reach\u003c\/li\u003e\n\u003cli\u003eBright polished finish to reduce friction and improve chip flow\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a size 4 combo drill countersink for use in standard drill chucks and collets accepting a 5\/16 inch shank, suitable for metalworking and fabrication applications requiring combined drilling and countersinking.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this tool should be performed by qualified machinists or metalworking professionals familiar with speeds and feeds for cobalt tooling. Secure the workpiece firmly before operation and confirm the spindle and chuck are properly tightened. Use appropriate cutting fluid to extend tool life when working with ferrous metals. Inspect the cutting edges before each use and replace the tool if chipping or excessive wear is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade Size\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Diameter\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Diameter\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright (Polished)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Plain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Double\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Length Tool\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: H-81186040600\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51729536483634,"sku":"H-81186040600","price":118.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1c3064317f97a63d018cb0fdc44e7444.jpg?v=1788705873","url":"https:\/\/voomisupply.com\/products\/hertel-h-81186040600-combo-drill-countersink-size-4-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}