{"product_id":"accupro-4500323-screw-machine-drill-bit-6-50mm-carbide","title":"Accupro 4500323 Screw Machine Drill Bit 6.50mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 4500323 is a screw machine length drill bit engineered for high-performance drilling in demanding shop and machining environments. Built from solid carbide and coated with TiAlN (titanium aluminum nitride), this bit handles elevated cutting temperatures and abrasive materials without rapid wear. The 140-degree split point with R-thinning reduces entry thrust and helps prevent walking on hard surfaces. At 6.50 mm in diameter with a 79 mm overall length, it fits standard straight-cylindrical tool holders and is sized for short, rigid setups where tool deflection must be minimized. Machinists and tool-and-die professionals are the primary users.\u003c\/p\u003e\u003cp\u003eThis drill bit is rated for stainless steels as the primary workpiece material, making it appropriate for aerospace, food service equipment, medical fabrication, and general precision machining applications where work hardening is a concern. The 3xD flute-to-diameter ratio and regular spiral flute geometry support chip evacuation in deep hole drilling scenarios. Coolant-through capability allows internal coolant delivery directly to the cutting edge, which is especially useful on CNC machining centers running stainless or other tough alloys.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction with TiAlN coating for extended tool life in stainless and hard alloys\u003c\/li\u003e\n\u003cli\u003e140-degree special point angle with R-thinning reduces thrust and improves hole entry accuracy\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports internal coolant delivery on compatible machine tool spindles\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank at 8.00 mm diameter fits standard collet and drill chuck tooling\u003c\/li\u003e\n\u003cli\u003eRegular spiral flute geometry with 34 mm flute length promotes efficient chip removal\u003c\/li\u003e\n\u003cli\u003eConforms to DIN specification designation for dimensional standardization\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a high-performance screw machine length drill bit for use in CNC machining centers, drill presses, and manual mills equipped with straight-cylindrical collet or chuck tooling accepting an 8.00 mm shank diameter. Primary workpiece material rating is stainless steels per manufacturer specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed with the machine spindle fully stopped and locked out per applicable machine safety procedures. Secure the straight-cylindrical shank firmly in a properly sized collet or drill chuck to the tool holder manufacturer's specified clamping torque range. When using the coolant-through feature, verify that the machine tool spindle and toolholder are compatible with internal coolant delivery before use. Proper speeds and feeds for the workpiece material should be confirmed against the manufacturer's cutting data recommendations before operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 6.50 mm (0.2559 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 79 mm (3.1102 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 34.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 8.00 mm (0.3150 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\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: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: R-Thinned\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: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification Designation\u003c\/strong\u003e: DIN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.13 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4500323\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730932334898,"sku":"4500323","price":131.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/795c41156a07cdab669a91657f6b76e8_1f389813-1a48-4e21-9fbc-a3b4c4b4088f.jpg?v=1788724980","url":"https:\/\/voomisupply.com\/products\/accupro-4500323-screw-machine-drill-bit-6-50mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}