{"product_id":"cleveland-c14687-letter-r-cobalt-screw-machine-drill-bit","title":"Cleveland C14687 Letter R Cobalt Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CLEVELAND C14687 is a cobalt screw machine length drill bit sized to Letter R, equal to 0.3390 inches in diameter. The bit features a 135-degree split point with web thinning for fast penetration and reduced walking on entry. Built from M42 cobalt high-speed steel, it carries a heavy-duty grade rating suited for demanding drilling applications. The overall length is 3.0 inches, with a straight-cylindrical shank of 0.3390 inches in diameter and a shank length of 1.3125 inches. The flute length measures 1.6875 inches. This bit is installed by machinists, maintenance technicians, and tool-and-die professionals working with drill presses, lathes, or CNC equipment.\u003c\/p\u003e\n\u003cp\u003eThe C14687 is designed for drilling into alloy steel and aluminum in production and job-shop environments where a shorter, stiffer screw machine length bit is preferred over jobber-length tooling. The reduced overall length improves rigidity and minimizes deflection when drilling in drill presses or turret lathes. Its two-spiral flutes with a regular helix promote efficient chip evacuation. Right-hand cut geometry is standard for conventional clockwise spindle rotation. Series 2133 construction conforms to ASME B94.11M and is dual-designated ANSI and DIN 1897.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter R size — 0.3390 inch diameter with a tolerance of +0.0000 to -0.0010 inches\u003c\/li\u003e\n  \u003cli\u003eM42 cobalt construction rated heavy duty for alloy steel and aluminum\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning for self-centering entry\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length at 3.0 inches overall for increased rigidity\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks and collets\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B94.11M, ANSI, and DIN 1897 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a screw machine length drill bit for use in drill presses, turret lathes, and CNC equipment with standard chucks or collets accepting a 0.3390-inch straight shank. Primary workpiece materials per manufacturer specification are alloy steel and aluminum.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove drill bits only with the machine fully powered down and the spindle at a complete stop. Secure the shank fully in the chuck or collet and verify concentricity before running. Use appropriate cutting fluid for the workpiece material to extend tool life and manage heat. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point geometry is compromised.\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: R\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3390 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0010 inches\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\u003eWeb Configuration\u003c\/strong\u003e: Parallel web-thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool 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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.0 inches (76.20 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.6875 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: 0.3390 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\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2133\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B94.11M, ANSI, DIN 1897\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: CLEVELAND\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C14687\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51697150460210,"sku":"C14687","price":22.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/31958796592256946e6918b33c057948.jpg?v=1788349939","url":"https:\/\/voomisupply.com\/products\/cleveland-c14687-letter-r-cobalt-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}