{"product_id":"guhring-9055190071400-cobalt-drill-bit-letter-k-9-32","title":"Guhring 9055190071400 Cobalt Drill Bit Letter K 9\/32","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9055190071400 is a cobalt jobber-length drill bit sized to Letter K (9\/32 inch, 0.2812 inch decimal), designed for high-performance drilling in metalworking applications. Built to DIN 338 standards from M35 cobalt steel and finished with a Titanium Nitride (TiN) coating, it delivers extended tool life under heat and wear compared to standard HSS bits. The four-facet split point geometry reduces walking at drill entry and lowers thrust force. Two right-hand spiral flutes evacuate chips efficiently across the full 69 mm flute length. Machinists, tool-and-die techs, and maintenance professionals specify this bit where consistent hole quality and coating durability matter.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for drilling aluminum, non-ferrous metals, cast iron, and low-to-medium alloy steels -- workpiece material codes K, M, N, and P per ISO classification. The straight-cylindrical shank at 9\/32 inch (7.14 mm) fits standard three-jaw drill chucks without adapters. Typical install environments include CNC drill presses, benchtop drill presses, and hand-held drill motors where a jobber-length bit provides adequate rigidity and reach. The 5xD flute-to-diameter ratio and tapered web with web thinning make it well suited for production or maintenance drilling in fabrication and machine shops.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM35 cobalt steel construction resists heat buildup during extended drilling cycles\u003c\/li\u003e\n  \u003cli\u003eTiN coating extends cutting edge life and reduces friction against workpiece material\u003c\/li\u003e\n  \u003cli\u003eFour-facet split point reduces walking and lowers required feed force at drill entry\u003c\/li\u003e\n  \u003cli\u003eRight-hand, regular spiral flute design promotes efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web reduces torque demand through the cut\u003c\/li\u003e\n  \u003cli\u003eConforms to DIN 338 standard for consistent dimensional tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a DIN 338 jobber-length replacement bit compatible with standard straight-cylindrical chuck systems; rated for primary workpiece materials classified under ISO codes K (aluminum alloys), M (stainless), N (non-ferrous), and P (steel).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a standard three-jaw drill chuck sized for a 9\/32 inch shank. Secure the shank fully in the chuck and verify runout before drilling. Observe manufacturer-recommended speeds and feeds for cobalt bits cutting the target material -- excessive feed rate or inadequate cutting fluid can chip the TiN coating or overheat the cutting edge. Never force a dull bit; re-sharpen or replace to maintain hole tolerance within the specified +0.000 to -0.022 mm diameter tolerance.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: K\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Inch)\u003c\/strong\u003e: 9\/32 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2812 inch\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: Four Facet, Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 109 mm (4.29 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 69 mm (2.72 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 9\/32 inch (7.14 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 40 mm (1.57 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.295 inches (58.29 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\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\u003eMaterial\u003c\/strong\u003e: M35 Cobalt Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.022 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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: 5519\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.053 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: GUHRING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9055190071400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51732387168562,"sku":"9055190071400","price":28.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bc2796606b86affad3ece68d198f005a_9b185699-789f-4b7e-a3bd-07ffa852fc63.jpg?v=1788742316","url":"https:\/\/voomisupply.com\/products\/guhring-9055190071400-cobalt-drill-bit-letter-k-9-32","provider":"Voomi Supply","version":"1.0","type":"link"}