{"product_id":"kennametal-4151168-screw-machine-drill-bit-7-50mm-carbide","title":"Kennametal 4151168 Screw Machine Drill Bit 7.50mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4151168 is a screw machine length (stub length) drill bit engineered for high-performance drilling in demanding production environments. Built from solid carbide with a multilayer TiAlN coating at the tip, it delivers extended tool life and thermal resistance in ferrous and non-ferrous materials. The 7.50 mm diameter bit features a 140-degree point angle for reduced thrust and accurate self-centering on entry. At 79.00 mm overall length with a 41.00 mm flute length, the compact stub-length geometry provides maximum rigidity to minimize deflection and breakage in short-depth drilling applications. Coolant-through capability supports chip evacuation and thermal management in high-cycle machining setups.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for CNC machining centers, turret lathes, and screw machines operating in production shops, tool rooms, and job shops. The straight cylindrical shank at 8.00 mm diameter seats securely in standard drill chucks and collet systems. The regular spiral flute and tapered web configuration promote consistent chip flow. Maximum drilling depth is 29.00 mm, making this bit appropriate for stub-depth through-holes and blind holes in workpieces where rigidity and precision tolerances are critical. It is typically installed and used by machinists and CNC operators.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in production drilling\u003c\/li\u003e\n\u003cli\u003eMultilayer TiAlN tip coating increases heat resistance and extends tool life\u003c\/li\u003e\n\u003cli\u003e140-degree point angle reduces entry thrust and improves hole location accuracy\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports chip evacuation and thermal control at the cutting edge\u003c\/li\u003e\n\u003cli\u003eStub length geometry minimizes overhang and deflection for tighter tolerances\u003c\/li\u003e\n\u003cli\u003eConforms to DIN 6537K specification for dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard production drill in the KENNAMETAL B051A-CPG series, compatible with any machine spindle or toolholder accepting an 8.00 mm straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or CNC operators. Ensure the machine spindle is fully stopped and locked out before loading or changing tooling. Seat the shank fully into the collet or chuck and confirm runout is within tolerance before engaging the cut. Do not exceed the maximum recommended drilling depth of 29.00 mm without retracting to clear chips, particularly in blind-hole applications.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 7.50 mm (0.2953 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 79.00 mm (3.1102 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 41.00 mm (1.6142 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 29.00 mm (1.1417 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 8.00 mm (0.3150 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\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 1.27 mm (0.0499 inches)\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 (Tip)\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\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\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.015 to 0.000 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B051A-CPG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.09 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 4151168\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51755868455218,"sku":"4151168","price":161.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/abd3b837a35efac315fc59ddf2ba65bc.jpg?v=1788960762","url":"https:\/\/voomisupply.com\/products\/kennametal-4151168-screw-machine-drill-bit-7-50mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}