{"product_id":"kennametal-2658403-taper-length-drill-bit-23-64-in","title":"Kennametal 2658403 Taper Length Drill Bit 23\/64 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 2658403 is a solid carbide taper length drill bit in the B978 series, designed for high-performance drilling in ferrous materials. It features a 132-degree point angle with a web-thinned, standard point type for reduced thrust and cleaner entry. The TiAlN coating provides thermal resistance and extended tool life in demanding cutting conditions. At 4.8031 inches overall length with a 3.1496-inch flute length, this bit is built for reach in production environments. Coolant-through capability supports chip evacuation and heat management at the cutting zone. Right-hand spiral flutes and a straight cylindrical shank complete the design for use in standard drill chucks and collet holders.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for machining cast iron and steel in both job shop and production settings. The straight cylindrical shank measures 0.3937 inches in diameter and 1.5748 inches in length, compatible with standard toolholding systems. A maximum drilling depth of 2.677 inches and a tapered web configuration support consistent chip flow through the full depth of cut. It conforms to DIN 6537K specification, making it appropriate for shops that standardize on metric-referenced tooling dimensions alongside inch-sized drill diameters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction with TiAlN coating for extended tool life in steel and cast iron\u003c\/li\u003e\n\u003cli\u003e132-degree point angle with web-thinned geometry reduces entry thrust and improves hole quality\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports chip evacuation and thermal management at depth\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, regular spiral flutes for efficient chip removal\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank for compatibility with standard chucks and collet systems\u003c\/li\u003e\n\u003cli\u003eConforms to DIN 6537K specification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in cast iron and steel machining applications. Suitable for standard drill chucks and collet holders accepting a 0.3937-inch straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this tooling should be performed by qualified machinists or tooling technicians. Ensure the machine spindle and toolholder are fully powered down and locked out before changing tooling. Verify runout and shank seating in the holder before initiating a cut. Activate coolant-through supply before engaging the workpiece to prevent thermal shock to the carbide substrate.\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 Size\u003c\/strong\u003e: 23\/64 inches (0.3594 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Angle\u003c\/strong\u003e: 132 degrees\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3.1496 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.8031 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3937 inches (10.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.5748 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.677 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.076 inches\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\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\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.006 to +0.021 mm\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\u003eWeight\u003c\/strong\u003e: 0.1874 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: 2658403\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51731198279986,"sku":"2658403","price":467.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5926aa12c4a8dc9305dca63db63e90a2_e9b25dd0-31f7-4d43-ad5a-1a468bdbc05c.jpg?v=1788728190","url":"https:\/\/voomisupply.com\/products\/kennametal-2658403-taper-length-drill-bit-23-64-in","provider":"Voomi Supply","version":"1.0","type":"link"}