{"product_id":"hertel-84578509-jobber-drill-bit-letter-a-hss-tin","title":"Hertel 84578509 Jobber Drill Bit Letter a Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 84578509 is a jobber-length twist drill bit sized to Letter A (0.2340 inches) and manufactured from high speed steel with a titanium nitride (TiN) coating. The TiN coating increases surface hardness and reduces friction at the cutting edge, extending tool life in repetitive drilling applications. The bit features a 118-degree standard point angle with web thinning on a tapered web, which reduces the force required to start and advance the drill. At 3.875 inches overall length with a 2.625-inch flute length, this is a standard jobber proportion suited to general-purpose work in metal, wood, and plastics. Machinists, maintenance mechanics, and trade professionals install this bit in conventional drill presses, hand drills, and CNC setups.\u003c\/p\u003e\u003cp\u003eThis bit is suited to general-purpose drilling in light industrial, maintenance, and trade-shop environments. The straight-cylindrical shank at 0.2340 inches diameter fits standard three-jaw chucks without modification. The two-flute spiral design with a regular helix clears chips efficiently in both through-hole and blind-hole drilling on ferrous and non-ferrous materials. It covers the 0.2000 to 0.2500-inch drill size range when Letter A sizing is called out on fabrication drawings or task sheets.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter A size — 0.2340 inches decimal equivalent\u003c\/li\u003e\n\u003cli\u003eTiN coating for increased wear resistance and reduced cutting friction\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle with web thinning for easier penetration\u003c\/li\u003e\n\u003cli\u003eTwo-flute regular spiral design for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard three-jaw chucks\u003c\/li\u003e\n\u003cli\u003eGeneral-purpose high speed steel construction for metal, wood, and plastics\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose jobber-length drill bit compatible with any standard three-jaw drill chuck or collet system accepting a 0.2340-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the shank fully in the chuck jaws and verify concentricity before beginning a drilling operation. Always use appropriate cutting fluid when drilling ferrous metals to extend bit life and improve hole finish. Wear ANSI-rated eye protection during all drilling operations. Inspect the cutting edges for chipping or wear before each use and replace the bit if the TiN coating is worn through at the point.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2340 inches\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: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.875 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: 0.2340 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.4 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: 84578509\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51730394480946,"sku":"84578509","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c8f7cc380ba64556819a7dad62720452.jpg?v=1788716672","url":"https:\/\/voomisupply.com\/products\/hertel-84578509-jobber-drill-bit-letter-a-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}