{"product_id":"hertel-83240663-cobalt-drill-bit-1-3-8-in-135-deg","title":"Hertel 83240663 Cobalt Drill Bit 1-3\/8 in 135 Deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 83240663 is a reduced shank cobalt drill bit designed for drilling into hardened stainless steel, heat treated alloy, and high temperature alloy. It features a 1-3\/8 inch cutting diameter with a 1\/2 inch straight-cylindrical shank, allowing it to fit standard 1\/2 inch chucks despite its large cutting diameter. The 135-degree notched split point reduces walking on entry and requires less thrust compared to conventional 118-degree points. A titanium nitride (TiN) coating increases surface hardness and extends tool life in abrasive materials. This bit is intended for professional machinists, pipefitters, HVAC fabricators, and metalworkers who regularly bore large-diameter holes in tough alloys.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for general-purpose production and maintenance drilling in ferrous metals, including hardened stainless steel and heat treated alloy stock. Typical applications include drilling mounting holes, pipe penetrations, and component bores in industrial and mechanical trade settings. The right-hand spiral flute geometry promotes efficient chip evacuation during through-hole drilling in thick-walled materials. It is sold individually and used in hand-held drill presses or vertical milling setups where a 1\/2 inch chuck is the available drive interface.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-3\/8 inch cutting diameter with a reduced 1\/2 inch shank for use in standard 1\/2 inch chucks\u003c\/li\u003e\n\u003cli\u003e135-degree notched split point for self-centering entry and reduced thrust on hard metals\u003c\/li\u003e\n\u003cli\u003eCobalt tool steel construction for heat resistance in hardened stainless and high-temp alloys\u003c\/li\u003e\n\u003cli\u003eTitanium nitride (TiN) coating for increased surface hardness and extended tool life\u003c\/li\u003e\n\u003cli\u003e3 inch flute length and 6 inch overall length for through-hole drilling in moderate stock thickness\u003c\/li\u003e\n\u003cli\u003eRight-hand cut with regular spiral flutes for consistent chip removal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in drill presses or machine setups equipped with a 1\/2 inch chuck capacity. Primary workpiece materials include hardened stainless steel, heat treated alloy, and high temperature alloy.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is intended for use by trained machinists or trade professionals operating drill presses, magnetic drills, or milling machines. Secure the workpiece firmly before drilling and confirm the chuck is tightened properly on the 1\/2 inch shank. No coolant through-tool feature is present; external cutting fluid is recommended when drilling hardened alloys to manage heat buildup. Inspect the cutting edges and TiN coating before each use and replace the bit if chipping or coating wear is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Notched Split Point\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: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Hardened Stainless Steel, Heat Treated Alloy, High Temperature Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through Tool\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 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: 83240663\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51744810434866,"sku":"83240663","price":451.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5ddf95150437e8b461595b1d22617b19.jpg?v=1788860768","url":"https:\/\/voomisupply.com\/products\/hertel-83240663-cobalt-drill-bit-1-3-8-in-135-deg","provider":"Voomi Supply","version":"1.0","type":"link"}