{"product_id":"kennametal-4151657-screw-machine-drill-bit-2-80mm-carbide","title":"Kennametal 4151657 Screw Machine Drill Bit 2.80mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4151657 is a stub-length (screw machine length) solid carbide drill bit designed for precision drilling in metal fabrication, machining, and industrial applications. It features a 2.80 mm (0.1102 inch) diameter with a 140-degree split point for accurate self-centering entry and reduced thrust. The multilayer TiAlN coating applied at the tip extends tool life under high-heat cutting conditions. With an overall length of 58.00 mm (2.284 inches) and a flute length of 17.00 mm (0.669 inches), this bit is built for rigidity and minimal deflection in short-reach drilling operations. It is installed and used by machinists, tool and die technicians, and CNC operators.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for stub-length drilling applications where rigidity is critical, such as drilling in tight clearances or on CNC machining centers and drill presses. It is appropriate for ferrous and non-ferrous metals, hardened materials, and cast components where a standard-length bit would introduce chatter or deflection. The 3xD flute-to-diameter ratio and tapered web configuration support efficient chip evacuation at shallow depths up to 12.00 mm (0.472 inches). It conforms to DIN 6537K specification, making it a recognized standard for stub-length carbide drills across industrial and precision machining environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for high rigidity and wear resistance in demanding materials\u003c\/li\u003e\n\u003cli\u003eTiAlN coating at the tip for extended tool life under elevated cutting temperatures\u003c\/li\u003e\n\u003cli\u003e140-degree point angle for self-centering entry and reduced thrust force\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank at 4.00 mm (0.1575 inch) diameter for standard collet and chuck compatibility\u003c\/li\u003e\n\u003cli\u003eTapered web configuration promotes effective chip evacuation during drilling\u003c\/li\u003e\n\u003cli\u003eConforms to DIN 6537K specification for consistent stub-length geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style stub-length carbide drill bit per DIN 6537K, compatible with standard straight-shank collet chucks and drill press spindles accepting a 4.00 mm shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or CNC technicians familiar with carbide tooling requirements. Ensure the machine spindle and collet are clean and free of debris before seating the shank to prevent runout. Carbide tooling is brittle and should not be used in hand drills or under interrupted-cut conditions without verifying suitability. Set appropriate spindle speeds and feed rates per the workpiece material; do not exceed the 12.00 mm maximum drilling depth for this tool.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 2.80 mm (0.1102 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 58.00 mm (2.284 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 17.00 mm (0.669 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 4.00 mm (0.1575 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 28.00 mm (1.102 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 12.00 mm (0.472 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: 0.45 mm (0.018 inches)\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\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN (Tip)\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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.014 to 0.000 mm (-0.0006 to 0.0000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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: B041A-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: 0.22 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: 4151657\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51728346284338,"sku":"4151657","price":82.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/811d2a811101b773dfefe2508f97f4ae.jpg?v=1788690569","url":"https:\/\/voomisupply.com\/products\/kennametal-4151657-screw-machine-drill-bit-2-80mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}