{"product_id":"precision-twist-drill-5997451-taper-length-drill-bit","title":"Precision Twist Drill 5997451 Taper Length Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5997451 is a taper length high speed steel drill bit from the QC91P series, designed for professionals who need extended reach beyond standard jobber-length drills without sacrificing rigidity. The bit measures 9\/64 inch (0.1406 inch decimal) in diameter with a 3 inch flute length and an overall length of 5-3\/8 inches, giving a 6xD flute-to-diameter ratio. The 135-degree split point geometry self-centers on contact, reducing walking and the need for a center punch. Right-hand cut with a parabolic flute profile, it is built for heavy-duty general-purpose drilling across a wide range of materials. The bright, uncoated HSS finish suits applications where coating compatibility or regrinding is a factor.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for use in machine shop, fabrication, maintenance, and field service environments where a straight-shank taper length bit is required. The parabolic flute geometry promotes efficient chip evacuation during deeper hole applications, reducing heat buildup and bit deflection. It is a practical choice for drilling operations in alloy steel, carbon steel, stainless steel, cast iron, aluminum, brass, bronze, copper, titanium, magnesium, nickel, graphite, and related alloys where extended flute length improves access and chip clearance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point self-centers on entry, minimizing workpiece marking and bit walking\u003c\/li\u003e\n  \u003cli\u003eParabolic flute profile enhances chip evacuation in deeper holes\u003c\/li\u003e\n  \u003cli\u003eTaper length body at 5-3\/8 inches OAL provides extended reach versus standard jobber bits\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel (HSS) construction with bright\/uncoated finish for general-purpose and regrindable applications\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web configuration reduces cutting resistance and thrust requirements\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank compatible with standard drill chucks; no threaded shank or coolant-through requirement\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI standards; heavy-duty grade rating for demanding drilling cycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose taper length drill bit compatible with standard straight-shank drill chucks and drilling equipment sized for 9\/64 inch shanks. Suitable for drilling alloy steel, aluminum, aluminum alloy, brass, bronze, carbon steel, cast iron, copper, graphite, hardened steel, magnesium, magnesium alloy, malleable iron, nickel, stainless steel, steel, tempered steel, titanium, and titanium alloy workpieces.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed by machinists, toolroom technicians, and maintenance tradespeople using standard drill presses, CNC drilling centers, or handheld drilling equipment. Secure the straight shank firmly in the drill chuck before operation and verify runout is within acceptable limits to prevent premature wear. Always reduce feed rate when breaking through the back side of a workpiece to avoid grabbing. Use appropriate cutting fluid or coolant for the workpiece material to extend bit life, particularly when drilling steel or stainless.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: QC91P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter (Inch)\u003c\/strong\u003e: 9\/64 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter (Decimal)\u003c\/strong\u003e: 0.1406 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length to Diameter Ratio\u003c\/strong\u003e: 6xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Parabolic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\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\u003eShank Diameter\u003c\/strong\u003e: 9\/64 inch (0.1406 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose, Heavy-Duty Grade\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreaded Shank\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.042 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 5997451\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51693528219954,"sku":"5997451","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/493f31ed2c78d8c96911c7c32cd9970a_229c59ef-f9f8-4d0f-9079-67734447fba3.jpg?v=1788313679","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5997451-taper-length-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}