{"product_id":"hertel-84580653-jobber-drill-bit-letter-r-135-deg-hss","title":"Hertel 84580653 Jobber Drill Bit Letter R 135 Deg Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 84580653 is a high speed steel jobber-length drill bit sized to Letter R (0.3390 inches), designed for general-purpose holemaking in metal, wood, and composite materials. It features a 135-degree split point that reduces walking and requires no center punch on most surfaces. The oxide coating provides basic corrosion resistance and helps reduce friction during cutting. At 4-3\/4 inches overall length with a 3-7\/16-inch flute length, this bit fits standard drill chucks and drill presses used in fabrication, maintenance, and mechanical contracting work. It is a heavy-duty grade bit appropriate for production or repetitive drilling applications.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for holemaking tasks in residential, commercial, and industrial settings. Typical applications include drilling clearance holes, pilot holes, and through-holes in ferrous and non-ferrous metals. The straight-cylindrical shank accepts standard three-jaw chucks on hand drills, drill presses, and CNC equipment. The regular spiral and tapered web configuration promote chip evacuation in moderate-depth holes. Machinists, pipefitters, electricians, and general maintenance technicians commonly use jobber-length bits in this size range.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter R sizing at 0.3390 inches decimal equivalent for consistent bore diameter\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and eliminates center-punch requirement on most workpieces\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with oxide coating for corrosion resistance and reduced friction\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web design promotes efficient chip removal and reduces heat buildup\u003c\/li\u003e\n\u003cli\u003eTwo-flute spiral configuration with regular helix for balanced chip evacuation\u003c\/li\u003e\n\u003cli\u003eHeavy-duty grade rated for repetitive production drilling use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard jobber-length drill bit with a straight-cylindrical shank; compatible with any three-jaw chuck or collet system accepting a 0.3390-inch shank diameter on hand drills, drill presses, and CNC spindles.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the shank fully in the chuck and confirm the bit runs true before beginning a cut. Disconnect power to any machine tool before changing or inspecting bits. Use cutting fluid appropriate for the workpiece material to extend bit life and maintain hole quality. Bits should be inspected for chipping or dulling after heavy use and replaced before bore diameter tolerance is affected.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3390 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\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3-7\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-3\/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: 0.3390 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\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\u003eSpecification Designation\u003c\/strong\u003e: NAS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Jobber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.54 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: 84580653\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51751058309426,"sku":"84580653","price":19.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/218ebea555a2b2001a547bc415769730.jpg?v=1788921435","url":"https:\/\/voomisupply.com\/products\/hertel-84580653-jobber-drill-bit-letter-r-135-deg-hss","provider":"Voomi Supply","version":"1.0","type":"link"}