{"product_id":"guhring-9038990011800-micro-drill-bit-size-56-carbide","title":"Guhring 9038990011800 Micro Drill Bit Size 56 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9038990011800 is a solid carbide micro drill bit designed for precision drilling in demanding industrial and trade applications. Built to Series 3899 standards, this bit carries a wire gauge size of 56 (1.18mm \/ 0.0465 inches decimal) and features a 140-degree faceted point with web thinning for accurate center-starting and reduced thrust. The TiAlN coating provides thermal resistance and extended tool life when cutting through ferrous materials. At 38mm overall length with a 3mm straight-cylindrical shank and a 5xD flute-to-diameter ratio, this is a purpose-built tool for tight-tolerance small-hole work. Material grade K40 solid carbide gives it the rigidity needed to hold h7 diameter tolerance across repeated operations.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for use in CNC machining centers, drill presses, and precision hand-held pneumatic spindles where small-diameter accuracy is critical. Primary workpiece materials are cast iron and steel, matching material codes K and P. The spiral flute geometry promotes chip evacuation in shallow and moderate-depth holes up to 8.23mm (0.324 inches). Right-hand cutting direction is standard for conventional machine spindle rotation. Typical users include machinists, toolroom technicians, and maintenance professionals working in metal fabrication, mold and die, or precision manufacturing environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire size 56 diameter (1.18mm \/ 0.0465 inches) with h7 tolerance for precision fitment\u003c\/li\u003e\n\u003cli\u003e140-degree faceted point with web thinning for clean entry and reduced walking\u003c\/li\u003e\n\u003cli\u003eTiAlN coating for high-temperature resistance and extended tool life on ferrous materials\u003c\/li\u003e\n\u003cli\u003eSolid carbide K40 grade construction for rigidity in small-diameter drilling\u003c\/li\u003e\n\u003cli\u003e5xD flute-to-diameter ratio supports chip clearance up to 8.23mm depth\u003c\/li\u003e\n\u003cli\u003e3mm straight-cylindrical shank for broad collet and chuck compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style micro drill for precision metalworking operations involving cast iron and steel workpieces. Fits standard 3mm collets and chucks used in CNC and manual drilling equipment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or toolroom technicians familiar with small-diameter carbide tooling. Ensure the spindle and workpiece are fully secured before engaging the drill to prevent bit deflection or breakage. Carbide tooling is brittle — avoid side-loading, interrupted cuts without proper feed rate adjustment, and drop impacts. Follow machine manufacturer guidelines for spindle speed and feed rate when drilling cast iron or steel at this diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 1.18mm \/ 0.0465 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: K40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Faceted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 38mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 10mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 8.23mm (0.324 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 5xD\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: h7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel\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: 3899\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.003 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GUHRING\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9038990011800\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51747275407666,"sku":"9038990011800","price":48.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a3b1ff8f610a0e8d8a5a6079767ab2b1_4b4dd18a-35f2-4222-8934-eb7880b1e9be.jpg?v=1788878481","url":"https:\/\/voomisupply.com\/products\/guhring-9038990011800-micro-drill-bit-size-56-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}