{"product_id":"precision-twist-drill-5995478-jobber-drill-bit-25-64-hss","title":"Precision Twist Drill 5995478 Jobber Drill Bit 25\/64 Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5995478 is a jobber-length drill bit designed for general-purpose drilling in steel, cast iron, and similar ferrous and non-ferrous materials. It measures 25\/64 inch (0.3906 inches) in diameter with a 118-degree standard point angle and a bright, uncoated HSS finish. The left-hand cutting direction makes it well-suited for extraction applications where reverse-rotation drilling is required, such as removing broken fasteners. A web-thinned, tapered web configuration reduces thrust at the point and improves chip flow. Licensed machinists, millwrights, and maintenance technicians are the primary users of this bit.\u003c\/p\u003e\u003cp\u003eThis bit fits standard jobber-length applications in metal fabrication shops, maintenance and repair operations, and industrial production environments. It performs in drilling through steel and cast iron workpieces, with a maximum drilling depth of 3.75 inches. The straight shank seats directly into standard drill chucks without an adapter. The Series L10 designation places this bit in a general-purpose jobber category conforming to ANSI standards, making it a reliable stock item for trade and industrial tool cribs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLeft-hand cut direction for reverse-rotation drilling and broken fastener extraction\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle with web-thinned, tapered web for reduced thrust\u003c\/li\u003e\n\u003cli\u003eHSS construction with bright uncoated finish for general-purpose ferrous drilling\u003c\/li\u003e\n\u003cli\u003eRegular spiral flute with 2 flutes and 3.75-inch flute length for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eStraight shank at 0.3906 inches diameter fits standard drill chucks directly\u003c\/li\u003e\n\u003cli\u003eANSI-compliant Series L10 jobber-length specification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose jobber-length replacement or stock drill bit for use in any standard drill chuck accepting a 25\/64-inch straight shank. Primary workpiece materials include steel and cast iron. Material codes P, M, K, N, and S apply per the input specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists, maintenance technicians, or millwrights using a standard keyed or keyless drill chuck. Ensure the drill press or handheld drill is powered down and the chuck is fully secured before beginning drilling operations. Left-hand bits require a reverse-rotation drill or driver to function as intended. Follow applicable ANSI and shop safety protocols for workpiece clamping and eye protection when drilling ferrous metals.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 25\/64 inch (0.3906 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\u003eCutting Direction\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: HSS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 3.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3906 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular 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\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: L10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Cast Iron\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: 0.7 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: 5995478\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51695827124530,"sku":"5995478","price":42.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/700097b531762e7d1f9969c9cacad3be_a6053a6a-43d2-4059-9a4b-a03d663b03b3.jpg?v=1788338567","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5995478-jobber-drill-bit-25-64-hss","provider":"Voomi Supply","version":"1.0","type":"link"}