{"product_id":"hertel-66693789-jobber-drill-bit-letter-d-hss-tin-4in","title":"Hertel 66693789 Jobber Drill Bit Letter D Hss Tin 4in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 66693789 is a jobber-length drill bit sized to letter D (0.2460 inches) with a 135-degree split point and a titanium nitride (TiN) coating over a high speed steel (HSS) body. It is designed for holemaking in metal, wood, and general-purpose materials encountered in mechanical, electrical, plumbing, and HVAC trade work. The split point geometry reduces walking at drill startup without requiring a center punch. The TiN coating extends cutting edge life by reducing friction and heat buildup. Overall length is 4 inches with a 2-3\/4 inch flute length. Installation or fabrication professionals who drill through sheet metal, pipe hangers, strut, or structural steel will find this bit suited to daily production use.\u003c\/p\u003e\u003cp\u003eThis drill bit fits standard 3-jaw chucks on handheld drills, drill presses, and magnetic base drills. The straight-cylindrical shank diameter matches the body at 0.2460 inches, making it compatible with any chuck that accepts fractional or letter-size shanks in that range. It is a heavy-duty grade bit rated to the NAS specification, appropriate for demanding trade applications including mechanical room fabrication, electrical rough-in drilling, and plumbing penetration work in light steel.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter D size  -  0.2460 inches decimal equivalent\u003c\/li\u003e\n\u003cli\u003e135-degree split point with web-thinned, tapered web for reduced thrust and no-walk startup\u003c\/li\u003e\n\u003cli\u003eTiN coating on high speed steel body for extended tool life in metal drilling\u003c\/li\u003e\n\u003cli\u003eRegular spiral, 2-flute design with 2-3\/4 inch flute length for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eHeavy-duty grade, NAS specification  -  suited for production and trade use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a jobber-length replacement drill bit for use in any standard drill chuck accepting a 0.2460-inch straight-cylindrical shank, including handheld drills, drill presses, and magnetic base drill units.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall this bit into a properly rated drill chuck and tighten with a chuck key before operation. Secure the workpiece with clamps or a vise before drilling  -  never hold freehand. Use appropriate cutting fluid when drilling ferrous metals to preserve coating life and reduce heat. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed to avoid workpiece damage or bit failure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2460 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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel (HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\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: 2-3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 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: 0.2460 inches\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble Margin\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 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: 66693789\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51740820439346,"sku":"66693789","price":15.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/53523094618c85abf950f4a31263206f.jpg?v=1788827608","url":"https:\/\/voomisupply.com\/products\/hertel-66693789-jobber-drill-bit-letter-d-hss-tin-4in","provider":"Voomi Supply","version":"1.0","type":"link"}