{"product_id":"kennametal-4150251-carbide-drill-bit-7-90-mm-140-deg","title":"Kennametal 4150251 Carbide Drill Bit 7.90 Mm 140 Deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4150251 is a screw machine length (stub) drill bit engineered for precision hole-making in metalworking applications. Built from solid carbide and coated with TiAlN at the tip, it delivers extended tool life and heat resistance compared to high-speed steel alternatives. The bit features a 140-degree split-point geometry, a two-flute regular spiral design, and a straight cylindrical shank with an 8.00 mm shank diameter. Overall length is 3.1102 inches (79.00 mm), with a flute length of 1.6142 inches (41.00 mm). This is a right-hand cutting tool conforming to DIN 6537K standards. It is suited for machinists and tooling professionals working in CNC or manual screw machine setups.\u003c\/p\u003e\u003cp\u003eThe 4150251 targets production drilling environments where short overall length and rigidity are priorities. Its stub-length body reduces deflection in high-feed operations on ferrous and non-ferrous materials. The 3xD flute-to-diameter ratio and tapered web configuration support chip evacuation at moderate depths. Maximum drilling depth is 1.1417 inches (29.00 mm). This bit is part of the KENNAMETAL Series B041A-CPG and is sold individually (package quantity of one).\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for superior hardness and wear resistance versus HSS equivalents\u003c\/li\u003e\n\u003cli\u003eTiAlN tip coating provides thermal protection and extended tool life in ferrous cutting\u003c\/li\u003e\n\u003cli\u003e140-degree point angle reduces thrust force and improves self-centering on entry\u003c\/li\u003e\n\u003cli\u003eStub\/screw machine length body increases rigidity and minimizes deflection\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard collet chucks and drill holders without modification\u003c\/li\u003e\n\u003cli\u003eConforms to DIN 6537K specification for dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct tooling option for screw machine, CNC lathe, and machining center setups requiring a 7.90 mm diameter stub drill with a straight shank. Fits tool holders and collets sized for an 8.00 mm shank diameter. Part of the KENNAMETAL Series B041A-CPG product family.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or tooling technicians familiar with carbide tooling handling procedures. Ensure the spindle and machine are fully stopped and locked out before installing or removing the bit. Solid carbide tooling is brittle and should not be subjected to lateral impact or dropped on hard surfaces. Confirm collet or chuck runout is within tolerance before use to avoid premature tool failure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 7.90 mm (0.3110 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 79.00 mm (3.1102 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 41.00 mm (1.6142 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 8.00 mm (0.3150 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: 29.00 mm (1.1417 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 1.34 mm (0.0526 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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\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\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN (Tip)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine Length)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.015 to 0.000 mm (-0.0006 to 0.0000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 4150251\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51746251931954,"sku":"4150251","price":119.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/581d6ca6370f57e05ac3501804f03b89.jpg?v=1788867669","url":"https:\/\/voomisupply.com\/products\/kennametal-4150251-carbide-drill-bit-7-90-mm-140-deg","provider":"Voomi Supply","version":"1.0","type":"link"}