{"product_id":"precision-twist-drill-5999636-reduced-shank-drill-bit","title":"Precision Twist Drill 5999636 Reduced Shank Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5999636 is a reduced shank twist drill bit designed for drilling into ferrous metals and a range of secondary materials including aluminum, copper, nickel, and titanium. The bit measures 15\/16 inches (0.9375 inches) in diameter with a 1\/2-inch Weldon flat shank, allowing it to seat securely in standard 1\/2-inch chucks and holders without slippage under load. Overall length is 6 inches with a 3-inch spiral flute length, providing a maximum drilling depth of 3 inches. Constructed from high speed steel with a bright uncoated finish, this Series R57 bit is ground to a 118-degree standard point angle for general-purpose work. Right-hand cut with regular spiral flutes.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for production and maintenance drilling in ferrous metal stock including steel plate, structural shapes, and fabricated components. The reduced shank design allows a larger-diameter bit to run in a standard 1\/2-inch capacity chuck or Weldon-style tool holder, expanding the range of a common setup without requiring a larger machine spindle. It also sees use in aluminum, copper, magnesium, and synthetic materials where a general-purpose HSS bit is appropriate. Machinists, tool-and-die technicians, fabricators, and maintenance mechanics are the typical installers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e15\/16-inch (0.9375-inch) cutting diameter with 1\/2-inch reduced Weldon flat shank for use in standard 1\/2-inch holders\u003c\/li\u003e\n  \u003cli\u003e118-degree standard point angle for general-purpose drilling in ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003e3-inch flute length supports drilling depths up to 3 inches with adequate chip clearance\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction provides good wear resistance across a broad range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish — compatible with cutting fluids and oils where required by the application\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, regular spiral flutes, Series R57 — no coolant through-holes, external coolant only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in 1\/2-inch Weldon-style end mill holders and 1\/2-inch capacity drill chucks. Suitable for ferrous metal as the primary workpiece material, with secondary compatibility for aluminum, cermet, copper, magnesium, nickel, synthetic, and titanium materials per Series R57 specifications. Conforms to ANSI standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSecure the Weldon flat shank fully into the holder before tightening the set screw against the flat to prevent axial pull-out under cutting load. Ensure the drill press, lathe, or milling machine spindle is powered down and locked out before changing bits. Apply appropriate cutting fluid or oil when drilling ferrous metals to extend tool life and improve hole quality. Inspect the cutting edges and point for wear or chipping before each use.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 15\/16 inches (0.9375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inch (0.5000 inches)\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\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\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Ferrous Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Materials\u003c\/strong\u003e: Aluminum, Cermet, Copper, Magnesium, Nickel, Synthetic, Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R57\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: 5999636\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51702082240818,"sku":"5999636","price":98.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0b4d199b7f8797037e82349591781de7.jpg?v=1788408892","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999636-reduced-shank-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}