{"product_id":"kennametal-2658399-taper-length-drill-bit-19-64in","title":"Kennametal 2658399 Taper Length Drill Bit 19\/64in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 2658399 is a solid carbide taper length drill bit from the B978 series, designed for high-performance drilling in demanding industrial and machining applications. Built to DIN 6537K specification, this bit features a TiAlN coating for heat and wear resistance, a 132-degree standard point, and a web-thinned, tapered web configuration that improves chip evacuation and reduces thrust at entry. At 0.2969 inches in diameter with a 4.3307-inch overall length and a 2.8346-inch flute length, this bit suits precision work where taper length reach is required. Coolant-through capability supports high-cycle cutting operations. Machinists and tool-and-die professionals are the primary installers.\u003c\/p\u003e\u003cp\u003eThe 2658399 is rated for use in cast iron and steel applications. Its straight cylindrical shank measures 0.3150 inches in diameter and 1.4173 inches in length, providing secure chuck engagement. The regular spiral flute geometry with right-hand cut makes this suitable for CNC machining centers and manual drill press operations where consistent hole quality in ferrous materials is required. Maximum drilling depth is 2.4020 inches, keeping the bit within its designed flute length for proper chip clearing.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in ferrous materials\u003c\/li\u003e\n\u003cli\u003eTiAlN coating extends tool life under high heat and high-speed cutting conditions\u003c\/li\u003e\n\u003cli\u003e132-degree standard point angle with web thinning reduces entry thrust and improves centering\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports high-cycle and deep-hole drilling operations\u003c\/li\u003e\n\u003cli\u003eDIN 6537K specification ensures dimensional consistency\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute with tapered web configuration for efficient chip evacuation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in cast iron and steel machining applications. Fits standard straight-shank tool holders and drill chucks accepting a 0.3150-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed with the machine fully powered down and locked out per applicable safety procedures. Ensure the chuck or collet is properly sized for the 0.3150-inch straight cylindrical shank before securing. Coolant-through operation requires a compatible spindle and toolholder with internal coolant delivery. Verify drilling depth does not exceed the rated maximum of 2.4020 inches to maintain proper chip clearance and avoid tool overload.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B978\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 19\/64 inches (0.2969 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 4.3307 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.8346 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.4020 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3150 inches (8.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.4173 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 132 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0620 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.006 to +0.021 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral (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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Cast Iron, Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1102 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: 2658399\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51729047716146,"sku":"2658399","price":417.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5926aa12c4a8dc9305dca63db63e90a2_c0306242-317d-4ffc-96f3-7edeae9602fa.jpg?v=1788699227","url":"https:\/\/voomisupply.com\/products\/kennametal-2658399-taper-length-drill-bit-19-64in","provider":"Voomi Supply","version":"1.0","type":"link"}