{"product_id":"sgs-66457-screw-machine-drill-bit-7-16-in-solid-carbide","title":"Sgs 66457 Screw Machine Drill Bit 7\/16 in Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SGS 66457 is a screw machine length drill bit designed for high-performance drilling in a wide range of materials. Built from micrograin solid carbide and coated with Ti-NAMITE-X, it delivers extended tool life and thermal resistance in demanding production environments. The bit measures 7\/16 inch (8.70 mm) in diameter with a 135-degree split point that reduces walking and improves hole entry accuracy. Overall length is 3.50 inches (89 mm), keeping the tool rigid and minimizing deflection in short-reach applications. This bit is suited for machinists, tool-and-die professionals, and CNC operators working in metal fabrication and general manufacturing.\u003c\/p\u003e\u003cp\u003eThe 66457 is built for universal workpiece materials, making it a practical choice across steel, stainless, aluminum, and similar substrates. Its screw machine length profile is ideal for drill press, CNC machining center, and turret lathe setups where a shorter, stiffer drill reduces chatter and improves positional accuracy. Coolant-through capability allows internal coolant delivery directly to the cutting zone, which is particularly valuable in deep-hole production runs or when machining heat-sensitive alloys. The straight-cylindrical shank fits standard drill chucks and collet systems without special toolholding.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide construction for wear resistance and edge retention\u003c\/li\u003e\n\u003cli\u003eTi-NAMITE-X coating reduces friction and extends tool life in ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003e135-degree split point with web thinning minimizes thrust force and prevents bit walking\u003c\/li\u003e\n\u003cli\u003eCoolant-through design delivers coolant directly to the cutting edge for heat management\u003c\/li\u003e\n\u003cli\u003e4-margin geometry improves hole roundness and surface finish\u003c\/li\u003e\n\u003cli\u003eScrew machine length profile increases rigidity and reduces deflection vs. jobber-length bits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and production drill bit compatible with standard drill chucks and collet toolholding systems accepting a 0.47-inch straight-cylindrical shank. Conforms to DIN 6537 specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this drill bit should be performed by qualified machinists or toolroom personnel familiar with cutting tool setup. Ensure the spindle and workholding are fully secured before engaging the cut. When using coolant-through capability, verify that coolant pressure and flow rate are within the limits of the machine tool and toolholder. Inspect the cutting edge for chipping or wear before each use and replace if edge integrity is compromised.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 7\/16 inch (8.70 mm)\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: Solid Carbide (Micrograin)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Ti-NAMITE-X\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.50 inches (89 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.85 inches (47 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.47 inches (10 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.57 inches (40 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.07 inches (1.80 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.85 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Margins\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral (Regular)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.00028 to +0.00098 inches (+0.007 to +0.025 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 142P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Universal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 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: SGS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 66457\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KYOCERA SGS PRECISION TOOLS","offers":[{"title":"Default Title","offer_id":51734169813298,"sku":"66457","price":289.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/283ada2e905d6b03befde822645ad910.jpg?v=1788761165","url":"https:\/\/voomisupply.com\/products\/sgs-66457-screw-machine-drill-bit-7-16-in-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}