{"product_id":"hertel-42244-screw-machine-drill-bit-0-625-in-cobalt","title":"Hertel 42244 Screw Machine Drill Bit 0.625 in Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 42244 is a screw machine length cobalt drill bit designed for drilling into hard and demanding workpiece materials. Built from M35 cobalt high-speed steel, it measures 0.625 inches (5\/8 inch) in diameter with an overall length of 4.4375 inches and a flute length of 2.9375 inches. The 135-degree split point reduces thrust and self-centers on contact, eliminating the need for a center punch on most surfaces. The oxide straw finish provides mild lubricity and heat resistance. This bit is intended for use by machinists, tool and die workers, and maintenance professionals working with tough alloys.\u003c\/p\u003e\u003cp\u003eThe HERTEL 42244 is suited for production and maintenance drilling applications where standard high-speed steel bits lose their edge too quickly. Its primary workpiece materials include hardened materials, heat-treatable alloyed steels, stainless steel, and titanium alloy. The shorter screw machine length body provides added rigidity compared to jobber-length bits, making it well suited for drill press, turret lathe, and CNC machining center use where chatter and deflection need to be minimized.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM35 cobalt steel construction handles hardened materials, stainless steel, and titanium alloy\u003c\/li\u003e\n\u003cli\u003e135-degree split point self-centers and reduces feed pressure on entry\u003c\/li\u003e\n\u003cli\u003eScrew machine length body (4.4375 inches overall) provides rigidity and reduces deflection\u003c\/li\u003e\n\u003cli\u003eSpiral flute with 3xD flute-to-diameter ratio promotes chip evacuation\u003c\/li\u003e\n\u003cli\u003eOxide straw finish adds surface hardness and mild lubricity\u003c\/li\u003e\n\u003cli\u003eNo coolant-through required, suitable for standard machine tool setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement or upgrade for standard 5\/8 inch screw machine length drill bits used in drill presses, lathes, and CNC machining centers handling hardened and alloyed steels.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of this drill bit is performed by machinists and tool operators using appropriate drill chucks or collet holders rated for the 0.625 inch shank diameter. Secure the bit fully in the chuck and verify runout before cutting. Always power down and lock out the machine before changing tooling. Use appropriate cutting fluid or coolant when drilling stainless steel or titanium alloy to extend tool life and manage heat buildup.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.625 inches (5\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.4375 inches (4-7\/16 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.9375 inches (2-15\/16 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: Split\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt (M35)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide Straw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Hardened Materials, Heat-Treatable Alloyed Steels, Stainless Steel, Titanium Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.14 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 42244\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51750091653426,"sku":"42244","price":66.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/692f25d874ab6fecec7f34dfd056bb67.jpg?v=1788913568","url":"https:\/\/voomisupply.com\/products\/hertel-42244-screw-machine-drill-bit-0-625-in-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}