{"product_id":"hertel-66691809-screw-machine-drill-bit-size-4-cobalt-tin","title":"Hertel 66691809 Screw Machine Drill Bit Size 4 Cobalt Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 66691809 is a screw machine length drill bit designed for high-production drilling in metal fabrication, machining, and maintenance applications. Built from cobalt steel with a titanium nitride (TiN) coating, this bit handles hard and abrasive materials where standard high-speed steel bits wear prematurely. The 135-degree split point starts on contact without center-punching, reducing walking and improving hole location accuracy. At 2.375 inches overall length with a 1.25-inch flute, the stub-length body provides extra rigidity for accurate, chatter-free drilling in a drill press, turret lathe, or CNC setup. The straight cylindrical shank fits standard drill chucks and collets sized for 0.2090-inch shanks.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for drilling mild steel, stainless steel, cast iron, and other hard metals in production shop and field machining environments. The screw machine length profile makes it a first choice when drill press quill travel is limited or when workpiece setup requires a shorter, stiffer tool. Machinists, tool-and-die workers, and maintenance mechanics commonly reach for this type of bit when standard jobber-length bits flex or drift in tough materials.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt steel construction resists heat buildup in hard and abrasive metals\u003c\/li\u003e\n  \u003cli\u003eTiN coating reduces friction and extends cutting edge life\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces thrust and eliminates center-punch requirement\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, parallel web configuration improves chip evacuation\u003c\/li\u003e\n  \u003cli\u003eStub screw machine length adds rigidity and reduces deflection\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute with straight cylindrical shank for standard chuck compatibility\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty grade rated for production and repeat-cycle drilling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit replacement for screw machine length drill bits in the wire size 4 (0.2090 inch) range, compatible with any drill press, lathe, or CNC spindle fitted with a chuck or collet accepting a 0.2090-inch straight cylindrical shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall the shank fully into the chuck or collet and tighten securely before operation. Verify spindle speed is appropriate for the workpiece material and bit diameter per standard machining tables. Coolant through is not supported on this bit, so apply cutting fluid externally when drilling steel or stainless. Inspect the cutting edges for wear or chipping before each use and replace if the point shows heat discoloration or edge rollover.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2090 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2090 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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: TiN (Titanium Nitride)\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\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.2000 to 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241635\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: 66691809\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51740087976242,"sku":"66691809","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/05b4fb5c45d2394146b21b446af60b8f.jpg?v=1788822202","url":"https:\/\/voomisupply.com\/products\/hertel-66691809-screw-machine-drill-bit-size-4-cobalt-tin","provider":"Voomi Supply","version":"1.0","type":"link"}