{"product_id":"guhring-9005490060400-jobber-drill-bit-letter-b-hss","title":"Guhring 9005490060400 Jobber Drill Bit Letter B Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9005490060400 is a jobber length twist drill bit sized to Letter B (0.2378 inches) and built from high speed steel with a bright, uncoated finish. It features a 130-degree split point angle and a parabolic flute geometry that promotes efficient chip evacuation and reduced thrust during drilling. The straight-cylindrical shank measures 0.2378 inches in diameter, and the bit carries an overall length of 3-31\/32 inches with a flute length of 2-15\/32 inches. Manufactured to DIN 338 standards, this is a high-performance drill bit suited for professional metalworking, maintenance, and fabrication applications where consistent accuracy and clean entry are required.\u003c\/p\u003e\u003cp\u003eThis drill bit is optimized for use in aluminum and other non-ferrous and short-chipping materials, corresponding to material codes K, N, and P. Its parabolic flute profile at a 5xD flute-to-diameter ratio supports deeper drilling passes with effective chip clearance. The maximum drilling depth reaches 2.1240 inches (53.94 mm), making it appropriate for through-holes and moderate-depth blind holes in production and job-shop environments. Machinists, tool-and-die tradespeople, and maintenance technicians will find it well suited for drill press, CNC, and hand-held power tool applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter B size — 0.2378 inches diameter, manufactured to DIN 338 specification\u003c\/li\u003e\n\u003cli\u003e130-degree standard point angle with web thinning for reduced entry force\u003c\/li\u003e\n\u003cli\u003eParabolic flute geometry at 5xD ratio promotes chip evacuation in aluminum and similar materials\u003c\/li\u003e\n\u003cli\u003eBright uncoated high speed steel construction — suitable for regrinding and general-purpose use\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank for compatibility with standard drill chucks\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction; 2-flute configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a DIN 338 jobber length drill bit for use in standard drill chucks and collet systems accepting a 0.2378-inch straight-cylindrical shank, suitable for drill presses, CNC machining centers, and hand-held power tools.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by a machinist or qualified trades technician into a properly rated drill chuck or collet system. Verify chuck capacity and runout before use, and ensure the workpiece is securely clamped or fixtured prior to drilling. Use appropriate cutting fluid or coolant when drilling ferrous materials or when extended production runs are anticipated. Follow all applicable shop safety protocols and machine-guarding requirements during operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2378 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-31\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2-15\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.1240 inches (53.94 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Parabolic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: 0.2378 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\u003eDrill Bit Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum (K, N, P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.022 to 0.000 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 338\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 549\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GUHRING\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9005490060400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51733619867954,"sku":"9005490060400","price":31.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cd42943d3aef4f78147b78406acf4665.jpg?v=1788757000","url":"https:\/\/voomisupply.com\/products\/guhring-9005490060400-jobber-drill-bit-letter-b-hss","provider":"Voomi Supply","version":"1.0","type":"link"}