{"product_id":"hertel-66693870-jobber-drill-bit-letter-n-hss-tin","title":"Hertel 66693870 Jobber Drill Bit Letter N Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 66693870 is a Letter N jobber-length drill bit ground from high speed steel and finished with a titanium nitride (TiN) coating. It features a 135-degree split point that reduces walking on entry and cuts more aggressively than a conventional 118-degree point. The straight-cylindrical shank measures 0.3020 inches in diameter, matching the 0.3020-inch drill diameter, and the bit carries a web-thinned, tapered web configuration that reduces thrust and improves chip flow. Overall length is 4-3\/8 inches with a flute length of 3-1\/16 inches. This is a heavy-duty grade bit suited for production drilling and general holemaking in metalworking, maintenance, and fabrication environments.\u003c\/p\u003e\n\u003cp\u003eThe 66693870 is designed for holemaking applications in metals and similar materials where a Letter N (0.3020-inch) diameter hole is required. The right-hand spiral flute with regular helix evacuates chips efficiently during through-hole and blind-hole drilling. It is appropriate for use in drill presses, CNC machining centers, and hand-held power drills. Machinists, tool-and-die technicians, pipefitters, and millwrights commonly reach for jobber-series bits at this diameter for clearance holes, tap drilling, and precision fit work. The TiN coating extends surface hardness and reduces heat buildup at the cutting edge, making it suitable for higher-cycle production runs.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter N diameter: 0.3020 inches  -  fits NAS specification tolerances\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces thrust and eliminates center-punch requirement on most metals\u003c\/li\u003e\n  \u003cli\u003eTiN coating increases surface hardness and extends tool life versus uncoated HSS\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web lowers cutting resistance and improves chip evacuation\u003c\/li\u003e\n  \u003cli\u003eRight-hand, 2-flute spiral design compatible with standard drill chucks and CNC holders\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty grade construction rated for repetitive production use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a jobber-series replacement drill bit for any application requiring a Letter N or 0.3020-inch diameter hole; fits standard straight-shank drill chucks and collet holders accepting a 0.3020-inch shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should follow standard machining safety practices. Secure the workpiece firmly before drilling and confirm the chuck or collet is fully tightened before starting the spindle. Apply appropriate cutting fluid or coolant for the material being drilled to preserve coating life and cutting-edge integrity. Inspect the cutting edges for wear before each production run; a dull split point can cause work-hardening in certain alloys and should be replaced or resharpened by a qualified tool grinder.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: Letter N (0.3020 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\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular Helix\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3-1\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 4-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3020 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Jobber\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: NAS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\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: 66693870\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51741497721138,"sku":"66693870","price":19.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/938cc740c86814fd3e4e039c3b5e0260.jpg?v=1788831857","url":"https:\/\/voomisupply.com\/products\/hertel-66693870-jobber-drill-bit-letter-n-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}