{"product_id":"accupro-10399-solid-carbide-jobber-drill-bit-5-16-in","title":"Accupro 10399 Solid Carbide Jobber Drill Bit 5\/16 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 10399 is a solid carbide jobber-length drill bit sized at 5\/16 inches (0.3125 inches) in diameter, designed for precision drilling in hard and abrasive materials. Built from solid carbide, this bit delivers higher rigidity and heat resistance compared to high-speed steel alternatives. The 150-degree split-point tip reduces walking and allows for faster penetration with less axial thrust. At 3-3\/4 inches overall length with a 1-7\/8-inch flute length, it fits standard drill chucks and is well-suited for production machining, maintenance shops, and toolroom work. Machinists, maintenance technicians, and metalworking professionals are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is intended for use in CNC machining centers, drill presses, and handheld power tools where a straight-cylindrical shank is appropriate. Its 3-flute spiral configuration improves chip evacuation and supports a 5xD flute-to-diameter ratio, making it effective for drilling into steel, cast iron, hardened alloys, and similar ferrous and non-ferrous materials. The right-hand cutting direction is standard for conventional drilling operations. It is sold individually and conforms to ANSI specification designations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction provides superior rigidity and wear resistance over HSS bits\u003c\/li\u003e\n  \u003cli\u003e150-degree drill point angle reduces tip walking and lowers entry thrust\u003c\/li\u003e\n  \u003cli\u003e3-flute spiral design improves chip clearance and supports faster feed rates\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish suitable for general-purpose metalworking applications\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n  \u003cli\u003eANSI-compliant jobber length for consistent interchangeability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard jobber-length drill bit with a straight-cylindrical shank, this bit is compatible with any drill press, CNC machining center, or handheld drill accepting a 5\/16-inch straight shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSecure the shank fully in the drill chuck and verify runout before starting the cut. Solid carbide bits are brittle compared to HSS — avoid side loading, interrupted cuts without proper support, and excessive feed rates that can cause chipping or breakage. For CNC applications, confirm spindle speed and feed rate are appropriate for the workpiece material before initiating the drill cycle. No coolant-through capability is present on this bit; apply external cutting fluid as needed per shop practice.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 150 degrees\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: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-7\/8 inches (1.8800 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-3\/4 inches (3.7500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification Designation\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.17 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 10399\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51734705766706,"sku":"10399","price":122.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/96577b82e23424b05b3c3c5ae60e0a12.jpg?v=1788765431","url":"https:\/\/voomisupply.com\/products\/accupro-10399-solid-carbide-jobber-drill-bit-5-16-in","provider":"Voomi Supply","version":"1.0","type":"link"}