{"product_id":"precision-twist-drill-5999978-extra-length-drill-bit","title":"Precision Twist Drill 5999978 Extra Length Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5999978 is a high-speed steel extra length drill bit designed for deep-hole drilling applications where standard-length bits cannot reach. At 0.2812 inches in diameter with a 12-inch overall length and a 9-inch spiral flute, this bit delivers the reach needed for extended boring operations. The 118-degree standard point angle and web-thinned tip reduce thrust requirements and improve cutting efficiency. The straight-cylindrical shank fits conventional drill chucks without adapters. This bit is designed for machinists, tool-and-die trades, and maintenance professionals working on fabrication, assembly, and repair operations.\u003c\/p\u003e\u003cp\u003eThe 5999978 is suited for both production and job-shop environments requiring extended reach in drilling aluminum, magnesium, copper, nickel, titanium, synthetic materials, stainless steel, steel, hardened steel, nickel alloys, malleable iron, high-strength bronze, magnesium alloys, and reinforced plastics. The Series 1290 design targets general-purpose applications where a 12xD flute-to-diameter ratio is needed to clear chips effectively over the full depth of cut.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e12-inch overall length provides extended reach for deep-hole drilling\u003c\/li\u003e\n\u003cli\u003e9-inch spiral flute length with regular helix promotes consistent chip evacuation\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle with web-thinned, tapered web for reduced entry thrust\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction, uncoated, for use across a wide range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks directly\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction, 2-flute configuration, ANSI-compliant Series 1290\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose extra length drill bit compatible with standard drill chucks and drill press or hand-drill setups accepting a 0.2812-inch straight-cylindrical shank. Primary workpiece materials include aluminum, magnesium, copper, nickel, titanium, and synthetic materials; secondary workpiece materials include hardened steel, stainless steel, nickel alloys, malleable iron, high-strength bronze, and reinforced plastics.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or trade professionals familiar with drilling equipment and speeds appropriate for the selected workpiece material. Secure the shank fully in the chuck and verify runout before beginning a cut. Always power down and lock out the drill press or driving tool before changing bits. Do not exceed the rated speed range for the workpiece material, and use appropriate cutting fluid where required by the material being drilled.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.2812 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 9 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2813 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular Helix\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 12xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 1290\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: PRECISION TWIST DRILL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5999978\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51700381942066,"sku":"5999978","price":54.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/df1c74c5de9b95e50bb2af0d0c73fcfd_00cb818c-b04c-4eb9-9e69-255c8cc3b060.jpg?v=1788389648","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999978-extra-length-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}