{"product_id":"chicago-latrobe-54115-cobalt-drill-bit-letter-p-0-3230-in","title":"Chicago-latrobe 54115 Cobalt Drill Bit Letter P 0.3230 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CHICAGO-LATROBE 54115 is a cobalt jobber length drill bit sized to Letter P (0.3230 inches decimal) with a 135-degree split point and a titanium nitride (TiN) coating. Built to M42 cobalt material grade, it delivers the heat resistance and edge retention required when drilling stainless steel and other hard ferrous materials. The 2-flute spiral design with a web-thinned, tapered web reduces thrust and improves chip evacuation. At 4.625 inches overall length with a 3.3125-inch flute length, this is a standard jobber format suited for drill press, CNC, or hand-held power tool use. Licensed HVAC technicians, plumbers, electricians, and general metalworking tradespeople reach for this bit when drilling through hard alloy or stainless substrates on the job.\u003c\/p\u003e\u003cp\u003eThe 54115 fits applications where a standard twist drill struggles. Stainless steel panel penetrations, structural steel brackets, and hard-alloy fittings are common targets. The straight-cylindrical shank (0.3230 inches diameter) seats cleanly in standard three-jaw drill chucks. The right-hand cut and regular spiral geometry suit general-purpose production and maintenance drilling. It meets DIN 338 and NAS 907 Type J standards, making it appropriate for shops and contractors with specification-controlled work orders.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction for heat resistance in hard and stainless steel drilling\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces friction and extends cutting edge life\u003c\/li\u003e\n\u003cli\u003e135-degree split point with web thinning lowers thrust and reduces walking on entry\u003c\/li\u003e\n\u003cli\u003e2-flute regular spiral geometry promotes efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eMeets DIN 338 and NAS 907 Type J standards for specification-controlled applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for drilling stainless steel and steel workpieces; compatible with any standard three-jaw drill chuck accepting a 0.3230-inch straight-cylindrical shank. Suitable for drill press, CNC drilling, and hand-held power tool use.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall and remove drill bits only with the tool unpowered and the chuck fully released. Use cutting fluid or coolant when drilling stainless steel to manage heat buildup and prolong bit life. Secure the workpiece firmly before drilling to prevent walking, even with the split-point geometry. Inspect the cutting edges before each use and replace if chipping or dulling is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3230 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt (M42)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\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 (Regular)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: 4.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3.3125 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: 0.3230 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.3125 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.0010 to 0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: DIN 338, NAS 907 Type J\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2550\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: CHICAGO-LATROBE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 54115\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51739259961650,"sku":"54115","price":30.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4772f5b6e275ee4ee903dd173c4a3c84.jpg?v=1788812301","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-54115-cobalt-drill-bit-letter-p-0-3230-in","provider":"Voomi Supply","version":"1.0","type":"link"}