{"product_id":"precision-twist-drill-5999373-17-64-in-screw-machine-drill-bit","title":"Precision Twist Drill 5999373 17\/64 in Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5999373 is a screw machine length drill bit designed for high-performance drilling in demanding shop and field applications. Built from high speed steel with a coated finish, this bit features a 135-degree split point and a web-thinned, tapered web configuration that reduces walking and cutting resistance at the start of the hole. The straight-cylindrical shank seats securely in standard drill chucks. At 17\/64 inch (0.266 inches) in diameter with an overall length of 2-11\/16 inches and a flute length of 1-1\/2 inches, it fits tooling setups where stub-length rigidity is required. Machinists, tool and die technicians, and maintenance professionals working with close-tolerance bores rely on this geometry for accurate, repeatable results.\u003c\/p\u003e\u003cp\u003eThis drill bit is rated for use in titanium as the primary workpiece material, making it suitable for aerospace, precision machining, and heavy industrial maintenance applications where standard HSS bits underperform. The screw machine length format provides increased rigidity compared to jobber-length bits, reducing deflection in short-hole and spot-drilling operations. The 2.5xD flute-to-diameter ratio supports chip evacuation in interrupted or deep-entry passes. It is sold individually and is appropriate for both CNC tooling setups and manual drill press use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point with web thinning reduces thrust and eliminates center-punch requirements on most materials\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with coated finish for extended tool life in titanium and ferrous materials\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length at 2-11\/16 inches overall for maximum rigidity and minimal deflection\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks and collet holders\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute with 2.5xD ratio for reliable chip clearing\u003c\/li\u003e\n\u003cli\u003eMeets ANSI and NAS 907 standards for dimensional and performance consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a Series R42C screw machine length drill bit conforming to ANSI and NAS 907 specifications, suited for use in standard drill chucks and collet systems accepting a straight-cylindrical shank in the 17\/64 inch diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by machinists or qualified maintenance technicians familiar with metal-cutting operations. Secure the shank fully in the chuck or collet before operation and verify runout before drilling titanium or other work-hardening materials. Always use appropriate cutting fluid or coolant for the workpiece material to preserve cutting edge life. Inspect the cutting edge for wear or chipping before each use and replace the bit if the split point or flute margins show damage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Inch)\u003c\/strong\u003e: 17\/64\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.2660 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-11\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-1\/2 inches\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\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\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\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 2.5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R42C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NAS 907\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.38 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: 5999373\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51710601003314,"sku":"5999373","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b4ccaccde5a32b9329b0c5abe44d8eef.jpg?v=1788468611","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999373-17-64-in-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}