{"product_id":"precision-twist-drill-5999606-reduced-shank-drill-bit","title":"Precision Twist Drill 5999606 Reduced Shank Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5999606 is a reduced shank drill bit engineered for drilling large-diameter holes with a standard 1\/2-inch shank setup. The bit measures 1.2188 inches (1-7\/32 inches) in diameter and runs 6 inches overall, with a 3-inch flute length and a 3-inch maximum drilling depth. Built from high-speed steel (HSS) with a bright, uncoated finish, it uses a 118-degree standard point angle and a right-hand spiral flute for consistent chip evacuation. The Weldon flat shank with three flats provides positive drive and eliminates slippage in compatible tool holders. This bit suits machinists, fabricators, and trade professionals working in shops or field environments.\u003c\/p\u003e\n\u003cp\u003eThe 5999606 is suited for production drilling and maintenance applications where oversized holes are required but the machine spindle or chuck is limited to a 1\/2-inch shank. The reduced shank design allows this 1.2188-inch bit to be used in standard drill presses, milling machines, or power tools equipped with a 1\/2-inch chuck or Weldon-style holder. Compatible primary workpiece materials include alloy steel, alloyed titanium, aluminum, aluminum alloy, brass, bronze, carbon steel, cast iron, copper, magnesium, magnesium alloy, and hardened steel, among others. Series R57 designates this as a general-purpose spiral-flute geometry with a regular spiral configuration.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1.2188-inch (1-7\/32-inch) cutting diameter with reduced 1\/2-inch shank for broad machine compatibility\u003c\/li\u003e\n  \u003cli\u003e118-degree standard point angle for reliable self-centering on a wide range of metals\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides adequate hardness and toughness across common workpiece materials\u003c\/li\u003e\n  \u003cli\u003eWeldon flat shank with three flats prevents rotational slippage under torque load\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish maintains dimensional accuracy and suits general-purpose use without added coating cost\u003c\/li\u003e\n  \u003cli\u003eRight-hand, regular spiral flute design promotes efficient chip removal during through-hole and blind-hole drilling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in drill presses, milling machines, and similar equipment fitted with a 1\/2-inch Weldon-style or standard chuck. Suitable for drilling alloy steel, carbon steel, cast iron, aluminum, brass, bronze, copper, magnesium, hardened steel, and related metals as specified in the product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation should be performed by a qualified machinist or trained trade professional. Secure the Weldon flat shank firmly in a compatible holder so all three flats are properly engaged before operation. Power down and de-energize all equipment before changing bits or adjusting tool holders. Do not exceed the rated drilling depth of 3 inches, and use appropriate cutting fluid or coolant practices per shop safety standards, noting this bit is rated for dry cutting without integrated coolant.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 1.2188 inches (1-7\/32 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 inches (1\/2 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\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\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Weldon Flat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flats\u003c\/strong\u003e: 3\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R57\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant\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: 0.5 pounds\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: 5999606\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51692570476850,"sku":"5999606","price":170.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/111edff2768c324661ef70f54ecbab28.jpg?v=1788299505","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999606-reduced-shank-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}