{"product_id":"guhring-9055190062500-cobalt-drill-bit-letter-d","title":"Guhring 9055190062500 Cobalt Drill Bit Letter D","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9055190062500 is a cobalt jobber-length drill bit sized to Letter D (0.2460 inches) with a titanium nitride (TiN) coating. Built to DIN 338 standards from M35 cobalt steel, this bit delivers the heat resistance and edge retention needed for production drilling in ferrous and non-ferrous materials. It features a 118-degree four-facet split point for accurate starting without a center punch, a web-thinned tapered web to reduce thrust, and a regular spiral flute geometry that evacuates chips efficiently. The straight-cylindrical shank measures 6.25 mm in diameter, fitting standard drill chucks. Overall length is 101 mm with a 63 mm flute length.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for general-purpose and production drilling applications across a range of workpiece materials including aluminum, mild steel, stainless steel, and cast materials. The TiN coating extends tool life in repetitive drilling cycles. It is a single-piece package appropriate for shop use, CNC setup, or field service work where a Letter D hole is required. Maximum drilling depth is 53.63 mm. The Series 5519 designation places it within a well-established jobber-drill family used by machinists, maintenance mechanics, and industrial tradespeople.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM35 cobalt steel construction for elevated heat resistance in harder materials\u003c\/li\u003e\n  \u003cli\u003eTitanium nitride (TiN) coating reduces friction and extends cutting life\u003c\/li\u003e\n  \u003cli\u003e118-degree four-facet split point for self-centering starts and reduced thrust\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web lowers drilling torque and improves chip clearance\u003c\/li\u003e\n  \u003cli\u003eDIN 338 standard jobber length with 5xD flute-to-diameter ratio\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, two-flute regular spiral for broad material compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a DIN 338 jobber-length replacement drill bit for applications requiring a Letter D (0.2460-inch) diameter hole. Compatible workpiece material codes K, M, N, and P cover aluminum, cast materials, non-ferrous metals, and steel as specified in the supplier data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of this drill bit is performed by machinists or maintenance mechanics using a standard drill press, milling machine, or hand drill with a compatible chuck accepting a 6.25 mm straight-cylindrical shank. De-energize and lock out any power equipment before changing tooling. Do not exceed the rated maximum drilling depth of 53.63 mm, and use appropriate cutting fluid for the workpiece material to preserve coating life.\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: 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: 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\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt M35\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Finish\/Coating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 101 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 63 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6.25 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 38 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 53.63 mm (2.111 inches)\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered Web-Thinned\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\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.022 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: 5519\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04 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: 9055190062500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51733025784114,"sku":"9055190062500","price":27.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bc2796606b86affad3ece68d198f005a_bbcfc760-d9c7-48db-9d5b-3ae5803f427d.jpg?v=1788750732","url":"https:\/\/voomisupply.com\/products\/guhring-9055190062500-cobalt-drill-bit-letter-d","provider":"Voomi Supply","version":"1.0","type":"link"}