{"product_id":"accupro-a-6120099r-micro-drill-bit-size-61-solid-carbide","title":"Accupro A-6120099R Micro Drill Bit Size 61 Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO A-6120099R is a wire gauge size 61 micro drill bit ground from solid carbide and finished bright\/uncoated. At 0.0390 inches in diameter, it is engineered for small-hole drilling in tight-tolerance applications where a high-speed steel bit would deflect or wear too quickly. The 120-degree standard point self-centers on entry and reduces thrust force in hard or brittle materials. With an overall length of 30 mm and a spiral flute, the bit evacuates chips efficiently even in deep micro-bores. Right-hand cutting direction and a straight-cylindrical shank make it compatible with standard collet and drill chuck setups used in precision machining environments.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for machinists, toolmakers, and precision fabricators working in electronics manufacturing, instrumentation, mold and die work, and similar applications requiring repeatable small-diameter holes. The miniature series designation indicates it is intended for light-duty drilling operations in materials such as hardened steel, stainless, aluminum, plastics, and circuit board substrates. The 1.50 mm shank diameter is consistent with micro-drill collet sizes common on CNC machining centers, drill presses, and precision hand-piece tools used in bench and production settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction provides rigidity and wear resistance in hard and abrasive materials\u003c\/li\u003e\n  \u003cli\u003eWire gauge size 61 — 0.0390 inch diameter for tight-tolerance micro-hole applications\u003c\/li\u003e\n  \u003cli\u003e120-degree standard point angle reduces thrust and promotes self-centering on entry\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish maintains accurate diameter tolerances without coating buildup\u003c\/li\u003e\n  \u003cli\u003eSpiral flute with regular helix promotes chip evacuation in deep micro-bores\u003c\/li\u003e\n  \u003cli\u003e30 mm overall length with 4.80 mm flute length suited for shallow precision drilling\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut with straight-cylindrical 1.50 mm shank fits standard micro collets and chucks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard collet chucks and drill chuck setups that accept a 1.50 mm straight-cylindrical shank, typical of CNC machining centers, benchtop drill presses, and precision rotary hand-piece tools used in micro-drilling applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eMicro drill bits of this diameter should be seated fully and securely in a properly sized collet or chuck before operation to prevent runout and bit breakage. Ensure spindle speed is appropriate for the bit diameter and workpiece material — micro carbide bits are brittle and will snap under side load or excessive feed pressure. Power down and de-energize all equipment before changing tooling. Follow applicable machine shop safety practices and manufacturer spindle speed guidelines for carbide micro-drill applications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: 61\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0390 inches\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: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 120 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.50 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 4.80 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 30 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Miniature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 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: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: A-6120099R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51754653614386,"sku":"A-6120099R","price":224.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/777427a11b8decf614213a4905aa3f3b.jpg?v=1788947477","url":"https:\/\/voomisupply.com\/products\/accupro-a-6120099r-micro-drill-bit-size-61-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}