{"product_id":"precision-twist-drill-5998635-screw-machine-drill-bit","title":"Precision Twist Drill 5998635 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5998635 is a screw machine length drill bit designed for high-performance metal drilling applications. Built from high speed steel with a coated finish, this bit features a 135-degree split point angle and web-thinned, tapered web construction that reduces walking and improves hole entry. At 0.0595 inches in diameter (wire size #53), it is engineered for precision drilling in tight-tolerance work. The straight-cylindrical shank seats securely in standard drill chucks, and the regular spiral flute promotes efficient chip evacuation. This is a heavy duty grade bit suited for machinists, maintenance technicians, and production drilling environments.\u003c\/p\u003e\u003cp\u003eThe 5998635 is built for use in screw machine and production drilling setups where consistent hole quality in small diameters is required. Its primary rated workpiece material is titanium, making it appropriate for aerospace, medical, and precision machining applications where difficult materials are common. The 2.5xD flute-to-diameter ratio and 5\/8-inch flute length are well suited to the shallow-depth drilling typical of screw machine operations. This bit meets ANSI and NAS 907 standards, confirming dimensional and performance compliance for regulated manufacturing environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.0595 inch diameter, wire size #53, for fine-tolerance hole work\u003c\/li\u003e\n\u003cli\u003e135-degree standard point angle with web thinning for reduced thrust and clean entry\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with coated finish for extended tool life\u003c\/li\u003e\n\u003cli\u003eRight hand cut with regular spiral flute for reliable chip clearance\u003c\/li\u003e\n\u003cli\u003eScrew machine length body with 5\/8-inch flute length and 1-5\/8-inch overall length\u003c\/li\u003e\n\u003cli\u003eMeets ANSI and NAS 907 specifications for use in regulated production environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard drill chucks accepting straight-cylindrical shanks. Rated for primary use in titanium workpieces and suitable for other materials consistent with high speed steel screw machine drill applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or maintenance technicians familiar with small-diameter drill bits. Secure the straight-cylindrical shank fully in a properly sized collet or chuck before operation. Ensure spindle speed and feed rate are appropriate for the workpiece material and bit diameter to prevent breakage. Do not apply side load to the bit during drilling, as small-diameter high speed steel bits are susceptible to deflection and snapping under lateral stress.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: #53\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0595 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.625 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\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\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\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\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\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: High Performance\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: R41C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NAS 907\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 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: 5998635\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51700154859826,"sku":"5998635","price":40.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1419b5e7ea6fb2e6a6398ce6a129c793.jpg?v=1788386847","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998635-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}