{"product_id":"cleveland-c70263-drill-bit-letter-e-0-25-in-135-point-hss","title":"Cleveland C70263 Drill Bit Letter E 0.25 in 135 Point Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CLEVELAND C70263 is a screw machine length drill bit sized at Letter E (0.25 inches) and built from high-speed steel (HSS) with a bright, uncoated finish. The 135-degree split point reduces walking on entry and lowers thrust requirements, making it well suited for production drilling where cycle time and hole quality matter. The web-thinned, parallel-web construction keeps the cutting geometry consistent through the life of the bit. At 2.5 inches overall length, this stub-length format provides added rigidity compared to jobber-length bits, reducing deflection in short-reach applications. The straight-cylindrical shank measures 0.25 inches in diameter with a 1.125-inch shank length, and the drill bit diameter is held to a tolerance of plus 0.0000 to minus 0.0007 inches. Machined to ASME B94.11M standards and designated to NAS 907 Type C, this bit is appropriate for professional metalworking and machining environments.\u003c\/p\u003e\n\u003cp\u003eThe C70263 is designed for drilling into alloy steel and aluminum in screw machine, turret lathe, and CNC drilling operations where a short, stiff bit is required to maintain positional accuracy. The 1.375-inch flute length provides adequate chip clearance for the shallow-depth cuts typical in screw machine work. Right-hand cut, two-flute spiral configuration handles both ferrous and non-ferrous workpiece materials. This bit is sold individually but carries a minimum order quantity of 12 units, making it practical for shop stocking or toolroom inventory replenishment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point reduces drill walk and lowers feed force on entry\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned parallel web maintains cutting efficiency and reduces heat buildup\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length at 2.5 inches overall provides superior rigidity over jobber-length alternatives\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction with bright uncoated finish suitable for alloy steel and aluminum\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance held to plus 0.0000 to minus 0.0007 inches for consistent hole sizing\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B94.11M and NAS 907 Type C specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard toolroom stock drill bit for screw machine, turret lathe, and CNC drilling setups requiring a Letter E (0.25-inch) straight-shank stub-length bit. Primary workpiece materials listed by the manufacturer are alloy steel and aluminum.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed by machinists and tool-and-die professionals in drill chucks, collets, or turret toolholders accepting a 0.25-inch straight-cylindrical shank. Ensure the machine spindle and workpiece are secured before operation, and confirm chuck runout is within acceptable limits to preserve the stated diameter tolerance. Coolant-through is not supported on this bit; apply external cutting fluid as appropriate for the workpiece material. Follow applicable shop safety procedures and machine guarding requirements during setup and operation.\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: E\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2500 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\u003eTool Material\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003eFlute Type\u003c\/strong\u003e: Spiral\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: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.125 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: 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: plus 0.0000 to minus 0.0007 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Alloy Steel, Aluminum\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: 2330\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B94.11M, NAS 907 Type C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: CLEVELAND\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C70263\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51700154564914,"sku":"C70263","price":59.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/65d59c5d84d088f5fd5069571a2a0a7a_22cbb577-2e9e-4e6c-af14-3ad1554004f4.jpg?v=1788386837","url":"https:\/\/voomisupply.com\/products\/cleveland-c70263-drill-bit-letter-e-0-25-in-135-point-hss","provider":"Voomi Supply","version":"1.0","type":"link"}