{"product_id":"precision-twist-drill-5999837-reduced-shank-drill-bit","title":"Precision Twist Drill 5999837 Reduced Shank Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5999837 is a reduced shank cobalt drill bit designed for drilling into ferrous metals and a wide range of secondary materials. The bit measures 55\/64 inches (0.8594 inches decimal) in diameter with a 1\/2-inch straight-cylindrical shank, allowing it to chuck into standard 1\/2-inch capacity drill chucks even though the bit diameter exceeds that size. Overall length is 6 inches with a 3-inch flute length. The 118-degree split point reduces walking on entry and lowers thrust requirements, making it a practical choice for production and maintenance drilling in metal fabrication, mechanical, and HVAC service environments.\u003c\/p\u003e\n\u003cp\u003eThis bit is well suited for drilling ferrous metals including steel and iron, and is rated for secondary materials such as aluminum, copper, nickel, titanium, magnesium, and synthetic materials. The Series R56CO reduced shank design fits standard 1\/2-inch drill chucks, making it compatible with common corded drills, drill presses, and magnetic base drills used in trade and light industrial settings. The right-hand spiral flute configuration handles the full 3-inch maximum drilling depth the flute length allows.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e55\/64 inch diameter (0.8594 inches decimal) with 1\/2-inch reduced straight-cylindrical shank\u003c\/li\u003e\n  \u003cli\u003eCobalt tool material for heat resistance and extended tool life in ferrous metals\u003c\/li\u003e\n  \u003cli\u003e118-degree split point for reduced walking and lower entry thrust\u003c\/li\u003e\n  \u003cli\u003e3-inch flute length supports up to 3 inches maximum drilling depth\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish — no coating to flake or chip in high-heat applications\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, regular spiral flute — compatible with standard drill press and handheld drill setups\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and direct-use drill bit for any application requiring a reduced shank cobalt bit in the 55\/64-inch diameter range. Fits any 1\/2-inch drill chuck. Primary workpiece material is ferrous metal; secondary workpiece materials include aluminum, cermet, copper, magnesium, nickel, synthetic, and titanium per manufacturer specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall the reduced shank fully and evenly into a 1\/2-inch drill chuck and tighten securely before operation. Power down and de-energize any drill press or magnetic base drill before changing bits. When drilling ferrous metals at this diameter, use appropriate work-holding fixtures and eye protection per applicable shop safety standards. Coolant is not required for this bit per manufacturer specifications, but chip clearing and feed rate management are important at larger diameters to avoid bit deflection or breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 55\/64 inches (0.8594 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5000 inches (1\/2 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eTool Material\u003c\/strong\u003e: Cobalt\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: Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral (Regular)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: R56CO\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\u003eCoolant Required\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: 5999837\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51720552939826,"sku":"5999837","price":129.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/82af3a1c443c848e241855fc6f36a202.jpg?v=1788566009","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999837-reduced-shank-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}