{"product_id":"kennametal-4121528-screw-machine-drill-bit-3-20-mm-carbide","title":"Kennametal 4121528 Screw Machine Drill Bit 3.20 Mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4121528 is a screw machine length drill bit designed for high-performance drilling in demanding materials. Built from solid carbide with a TiN tip coating, it delivers extended tool life in applications where standard HSS tooling falls short. The 140-degree split point angle reduces thrust and minimizes walking at entry, making it well suited for work in stainless steel, cast iron, and high-temperature alloys. At 62.00 mm overall length (2.4409 inches) with a 6.00 mm straight-cylindrical shank (0.2362 inches), this Series B051A bit fits standard collets and toolholders used in CNC and manual screw machine setups. Coolant-through capability supports chip evacuation and thermal management in deep-hole passes.\u003c\/p\u003e\u003cp\u003eThis bit is intended for production drilling in metalworking environments, including CNC machining centers, gang drills, and turret lathes. Primary workpiece materials include stainless steel, cast iron, and high-temperature alloys. The screw machine length format provides added rigidity compared to jobber-length tooling, reducing deflection in short-reach applications. The 3xD flute-to-diameter ratio and regular spiral flute geometry support consistent chip flow. Maximum drilling depth is 14.00 mm (0.5512 inches). This tooling is typically installed and run by machinists, toolroom technicians, and CNC operators in light to heavy manufacturing environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for wear resistance in abrasive and hard materials\u003c\/li\u003e\n\u003cli\u003eTiN tip coating reduces friction and extends cutting edge life\u003c\/li\u003e\n\u003cli\u003e140-degree point angle minimizes entry thrust and self-centers on flat surfaces\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports chip evacuation and heat control during drilling\u003c\/li\u003e\n\u003cli\u003eTapered web configuration adds rigidity and reduces torque demand\u003c\/li\u003e\n\u003cli\u003eMeets DIN 6537K specification for dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a screw machine length replacement or production drill for use in stainless steel, cast iron, and high-temperature alloy applications. Compatible with standard straight-shank toolholders and collets accepting a 6.00 mm shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and setup should be performed by qualified machinists or toolroom personnel. Ensure the machine spindle is fully stopped and the tool is properly torqued into the collet or chuck before operation. Verify coolant-through circuits are active before engaging the cut to prevent thermal damage to the cutting edge. Do not exceed the maximum drilling depth of 14.00 mm per pass without pecking cycles to clear chips.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3.20 mm (0.1260 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 62.00 mm (2.4409 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 20.00 mm (0.7874 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6.00 mm (0.2362 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 36.00 mm (1.4173 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 14.00 mm (0.5512 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.52 mm (0.0204 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\u003c\/strong\u003e: TiN (Tip)\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: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\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\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.012 to 0.000 mm (-0.0005 to 0.0000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Cast Iron, High-Temp Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B051A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: DIN 6535, DIN 6537\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.037 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4121528\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51740144730418,"sku":"4121528","price":124.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e3aafefd8605628d9fa25e9bf77b6d5d.jpg?v=1788822857","url":"https:\/\/voomisupply.com\/products\/kennametal-4121528-screw-machine-drill-bit-3-20-mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}