{"product_id":"kennametal-4151174-solid-carbide-drill-bit-5-16-inch","title":"Kennametal 4151174 Solid Carbide Drill Bit 5\/16 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4151174 is a screw machine length (stub) drill bit designed for high-performance drilling in demanding production environments. Built from solid carbide with a multilayer TiAlN coating at the tip, this bit delivers superior wear resistance and heat tolerance compared to high-speed steel alternatives. At 5\/16 inch (0.3125 inch) diameter with a 140-degree split point, it provides fast penetration and accurate self-centering on entry. The overall length is 3.11 inches (79.00 mm), keeping the tool rigid and reducing deflection in short-reach applications. Licensed machinists, tool-and-die techs, and precision drilling operations are the primary users of this series.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for stub-length drilling operations where rigidity and positional accuracy are critical. The right-hand spiral flute geometry and tapered web configuration aid chip evacuation in blind and through-hole applications. Coolant-through capability supports high-speed, high-feed machining in ferrous and non-ferrous materials. The straight cylindrical shank with a diameter of 0.3150 inch (8.00 mm) seats directly in standard drill chucks and collets. It is well-matched for CNC machining centers, drill presses, and screw machine setups requiring consistent hole quality at production volumes.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for high rigidity and extended tool life in abrasive or hard materials\u003c\/li\u003e\n\u003cli\u003eMultilayer TiAlN tip coating reduces heat buildup and improves wear resistance at elevated cutting speeds\u003c\/li\u003e\n\u003cli\u003e140-degree standard point angle promotes self-centering and reduces thrust force on entry\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports high-feed drilling and assists chip evacuation in deep or blind holes\u003c\/li\u003e\n\u003cli\u003eTapered web configuration enhances strength at the core while improving cutting geometry\u003c\/li\u003e\n\u003cli\u003eStub (screw machine) length minimizes overhang for maximum rigidity and reduced runout\u003c\/li\u003e\n\u003cli\u003eConforms to DIN 6537K specification for consistent dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003ePart of the KENNAMETAL Series B051A-CPG stub-length carbide drill line. Designed for use in standard drill chucks and collets accepting a 0.3150-inch straight cylindrical shank. Suitable for CNC machining centers and conventional drilling equipment configured for coolant-through tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by qualified machinists or tooling technicians familiar with carbide tooling handling procedures. Ensure the machine spindle and chuck are fully stopped and de-energized before inserting or removing the bit. Carbide tooling is brittle — avoid lateral loading, interrupted cuts beyond the tool's rated capacity, or dropping the bit on hard surfaces. Verify coolant-through lines are clear and delivering adequate flow before running at rated speeds and feeds.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 5\/16 inch (0.3125 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.11 inches (79.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.61 inches (41.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.14 inches (29.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3150 inch (8.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.42 inches (36.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered\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\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN Multilayer (TiN Tip)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.0006 to 0.0000 inches (-0.015 to 0.000 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B051A-CPG\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4151174\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51735216193842,"sku":"4151174","price":160.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f9ab916550fdc17a3c95dda1ecb861f4.jpg?v=1788770444","url":"https:\/\/voomisupply.com\/products\/kennametal-4151174-solid-carbide-drill-bit-5-16-inch","provider":"Voomi Supply","version":"1.0","type":"link"}