{"product_id":"hertel-h-81186050400-combo-drill-countersink-size-5-cobalt","title":"Hertel H-81186050400 Combo Drill Countersink Size 5 Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL H-81186050400 is a combination drill and countersink tool designed to drill and chamfer a pilot hole in a single pass. Built from cobalt high-speed steel, it delivers added heat and wear resistance compared to standard HSS tooling, making it well-suited for harder alloys, stainless, and structural materials. The body measures 7\/16 inches in diameter with a 3\/16-inch drill point diameter and a 4-inch overall length. The 118-degree drill point angle and 60-degree included countersink angle are standard dimensions for machine screw countersinking operations. The bright, uncoated finish keeps the surface as-ground without added coating.\u003c\/p\u003e\n\u003cp\u003eThis tool is used in metalworking and fabrication applications where a countersunk seat is required for flat-head or oval-head fasteners. It is appropriate for use in manual drill presses, CNC machining centers, and turret lathes where combined drilling and countersinking reduces cycle time. The trade size designation is Number 5, corresponding to the compatible screw size. The double-end configuration and long-length classification make it a practical choice for production setups and toolroom work. Machinists, tool-and-die workers, and fabrication shops are the primary users.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt HSS construction for improved hardness and heat resistance over standard HSS\u003c\/li\u003e\n  \u003cli\u003eCombines drilling and countersinking in a single operation for faster cycle times\u003c\/li\u003e\n  \u003cli\u003e118-degree drill point angle paired with 60-degree countersink included angle\u003c\/li\u003e\n  \u003cli\u003eDouble-end design extends tool life by providing two usable ends\u003c\/li\u003e\n  \u003cli\u003eLong-length tool classification for extended reach applications\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish — no coating to chip or flake on abrasive materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a trade size Number 5 combo drill countersink compatible with standard Number 5 machine screw countersink seating requirements in metalworking and fabrication setups.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall into a rigid collet or drill chuck rated for the 7\/16-inch body diameter before use. Secure the workpiece firmly before engaging the tool to prevent walking on the entry point. Set spindle speed according to the workpiece material and tool diameter — cobalt tooling tolerates higher cutting temperatures but still requires appropriate feeds and speeds for tool life. Inspect both ends for wear or chipping before each use, especially in production environments.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrade Size\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Diameter\u003c\/strong\u003e: 7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Diameter\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 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\/Uncoated\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\u003eWeight\u003c\/strong\u003e: 0.2 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241603\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: H-81186050400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51747405365554,"sku":"H-81186050400","price":101.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8005064e7a737288da5d43e0a83e791c.jpg?v=1788879582","url":"https:\/\/voomisupply.com\/products\/hertel-h-81186050400-combo-drill-countersink-size-5-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}