{"product_id":"harvey-tool-20260-c3-micro-drill-bit-no-66-solid-carbide","title":"Harvey Tool 20260-C3 Micro Drill Bit No. 66 Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL 20260-C3 is a solid carbide micro drill bit designed for high-precision drilling in tight-tolerance applications. It carries a wire gauge size of No. 66, which corresponds to a decimal diameter of 0.0330 inches, and features a 130-degree split-point geometry that reduces walking and improves centering on entry. The AlTiN coating increases surface hardness and thermal resistance, extending tool life in harder workpiece materials. With a 1\/8-inch shank diameter and an overall length of 1.5000 inches, this bit fits standard collet chucks and drill chucks common in CNC machining centers, micro-drilling fixtures, and precision bench machines.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for precision machining operations in aerospace, electronics, medical device, and general metalworking environments where small-diameter holes are required. The spiral flute design promotes chip evacuation in deep-hole applications common in stainless steel, hardened steels, titanium, and similar difficult-to-machine materials. Right-hand cut orientation matches standard spindle rotation on conventional CNC and manual drill presses. Machinists and tool-and-die professionals working with miniature-scale components will find this bit appropriate for production and prototype work alike.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNo. 66 wire gauge size at 0.0330 inches decimal diameter for micro-scale hole requirements\u003c\/li\u003e\n  \u003cli\u003e130-degree drill point angle reduces thrust force and improves self-centering on entry\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction provides rigidity and wear resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating delivers elevated thermal resistance and extended tool life at higher cutting speeds\u003c\/li\u003e\n  \u003cli\u003eSpiral flute geometry promotes efficient chip evacuation during drilling\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut with 1\/8-inch shank for compatibility with standard collet and chuck systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers, micro-drilling stations, and precision drill presses equipped with a 1\/8-inch collet or drill chuck. Belongs to the Harvey Tool Miniature Drills series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should be performed by a qualified machinist or tooling technician familiar with small-diameter carbide tooling. Secure the shank fully in a collet or chuck before operation, and verify runout is within acceptable tolerance to prevent micro-drill breakage. Carbide is brittle  -  avoid side loading, interrupted cuts without appropriate feed adjustments, or hand-feeding with excessive pressure. Follow machine manufacturer guidelines for appropriate spindle speeds and feed rates for the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 66\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.0330 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 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\/Finish\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\u003eFlute Length\u003c\/strong\u003e: 0.3950 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\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: 20260-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51743204639026,"sku":"20260-C3","price":40.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/17850c947fc75af9534ccf940652f7f9_f433367e-d7a7-4c94-a1ad-e020674604c6.jpg?v=1788843919","url":"https:\/\/voomisupply.com\/products\/harvey-tool-20260-c3-micro-drill-bit-no-66-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}