{"product_id":"kennametal-4151125-screw-machine-drill-bit-4-40mm-carbide","title":"Kennametal 4151125 Screw Machine Drill Bit 4.40mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4151125 is a screw machine length (stub) drill bit designed for high-performance drilling in demanding production environments. Built from solid carbide and coated with a multilayer TiAlN finish at the tip, this bit delivers heat resistance and extended tool life in ferrous and non-ferrous materials. The 4.40 mm diameter matches a 0.1732 decimal inch equivalent, and the 140-degree point angle promotes self-centering entry and reduced thrust force. With an overall length of 66.00 mm (2.5984 inches) and a straight cylindrical shank, it is suited for use in CNC machining centers, drill presses, and screw machine setups where rigidity and repeatability are required.\u003c\/p\u003e\u003cp\u003eThis drill bit fits applications in precision manufacturing, job shop, and production drilling environments where short, rigid tooling is preferred. The stub length and 3xD flute-to-diameter ratio make it well-suited for shallow-hole operations in tight-tolerance work. Coolant-through capability supports chip evacuation and thermal management in high-cycle drilling operations. The Series B051A-CPG designation identifies it within the KENNAMETAL solid carbide stub drill product line. It is typically installed and used by machinists, toolroom technicians, and CNC operators working to DIN 6537K specifications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction with multilayer TiAlN tip coating for extended tool life and heat resistance\u003c\/li\u003e\n\u003cli\u003e140-degree point angle for self-centering entry and reduced thrust force\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports chip evacuation in high-cycle production drilling\u003c\/li\u003e\n\u003cli\u003eStub length with 3xD flute ratio provides rigidity in shallow-hole applications\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting, regular spiral flute geometry for consistent chip flow\u003c\/li\u003e\n\u003cli\u003eTapered web configuration adds strength at the drill point\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style screw machine length drill bit conforming to DIN 6537K specification, suitable for use in standard straight-shank drill chucks and collet holders accepting a 6.00 mm shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this drill bit should be performed by qualified machinists or toolroom technicians. Secure the straight shank firmly in a compatible chuck or collet before operation, and verify runout before beginning any production run. Enable coolant-through supply where the machine spindle supports it to maximize chip evacuation and tool life. Inspect the cutting edges and coating condition before each use and replace the bit if chipping or excessive wear is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 4.40 mm (0.1732 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 66.00 mm (2.5984 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 24.00 mm (0.9449 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6.00 mm (0.2362 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 36.00 mm (1.4173 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 17.00 mm (0.6693 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.73 mm (0.0286 inches)\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\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\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\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine Length)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.0005 to 0.0000 inches (-0.012 to 0.000 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Size Range\u003c\/strong\u003e: 3.50 to 5.00 mm (0.1500 to 0.2000 inches)\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\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4151125\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51749369676082,"sku":"4151125","price":124.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6047723244c39e297ff48cf30f8b8e5b_1b0b0abe-12d7-44e1-bc83-93417ea7718c.jpg?v=1788905122","url":"https:\/\/voomisupply.com\/products\/kennametal-4151125-screw-machine-drill-bit-4-40mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}