{"product_id":"harvey-tool-cht0625-c3-micro-drill-bit-1-16-in-carbide","title":"Harvey Tool CHT0625-C3 Micro Drill Bit 1\/16 in Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL CHT0625-C3 is a solid carbide micro drill bit designed for precision drilling in pre-hardened mold steels and similarly tough ferrous materials. Measuring 1\/16 inch (0.0625 inches) in diameter, it features a 140-degree point angle that reduces thrust and improves centering on hard workpiece surfaces. The AlTiN coating provides thermal resistance and extended tool life under high-speed cutting conditions. With an overall length of 63 mm and a spiral flute design, this bit is engineered for the tight tolerances and demanding cycle counts common in mold making and toolroom environments. Installation and use require a compatible toolholder accepting a 3 mm shank diameter.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for machining pre-hardened mold steel in both mold making and die shops, as well as general toolroom applications where small-diameter, high-precision holes are required. It belongs to the Miniature High Performance Drills series optimized for prehardened steels. Typical applications include blind and through holes in hardened workpieces where dimensional accuracy and hole quality are critical. The right-hand cutting direction and spiral flute geometry support efficient chip evacuation in deep or interrupted cuts on CNC machining centers and drill presses.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in hardened materials\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating for thermal protection and extended tool life at elevated cutting speeds\u003c\/li\u003e\n  \u003cli\u003e140-degree point angle reduces thrust and improves self-centering on hard surfaces\u003c\/li\u003e\n  \u003cli\u003eSpiral flute geometry promotes chip evacuation in deep-hole applications\u003c\/li\u003e\n  \u003cli\u003eh6 diameter tolerance ensures consistent fit in precision toolholders\u003c\/li\u003e\n  \u003cli\u003e3 mm shank diameter compatible with standard miniature toolholding systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with pre-hardened mold steel as the primary and secondary workpiece material. Accepts toolholders sized for a 3 mm shank. Belongs to the Miniature High Performance Drills - Prehardened Steels series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the tool is secured in a clean, properly sized collet or toolholder before operation. Verify runout with a dial indicator before beginning a cut, as excessive runout accelerates wear and breakage at this diameter. Follow the machine manufacturer and cutting tool manufacturer guidelines for speeds, feeds, and coolant when machining hardened steels.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1\/16 inch (0.0625 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 63 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.866 inches (22 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Pre-Hardened Mold Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: HARVEY TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: CHT0625-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51728327999794,"sku":"CHT0625-C3","price":107.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3b4e01011456b533fc08d8c181e8d8f0.jpg?v=1788690483","url":"https:\/\/voomisupply.com\/products\/harvey-tool-cht0625-c3-micro-drill-bit-1-16-in-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}