{"product_id":"chicago-latrobe-48371-screw-machine-drill-bit-0-228-in-hss","title":"Chicago-latrobe 48371 Screw Machine Drill Bit 0.228 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 48371 is a screw machine length drill bit designed for high-production drilling in cast iron and steel. Built from high speed steel with a coated finish, it delivers a 0.228 inch diameter bore with a 135-degree split point that reduces walking and lowers thrust at entry. The shortened screw machine length body adds rigidity compared to jobber-length bits, making it a strong choice in drill presses and CNC turret setups where chatter control and hole accuracy matter. Overall length is 2-7\/16 inches with a 1-5\/16 inch flute length. Diameter tolerance is held to +0.0000 to -0.0007 inches, meeting ISO and NAS 907 specifications. This is a heavy-duty tool intended for professional metalworking and machining applications.\u003c\/p\u003e\n\u003cp\u003eThe 48371 fits residential shop, commercial machine shop, and industrial production environments wherever tight-tolerance drilling in steel or cast iron is required. The straight-cylindrical shank seats cleanly in standard drill chucks and quick-change holders. The wire size No. 1 designation places this bit in the 0.2000 to 0.2500 inch diameter range, making it a common selection for tapping prep, jig work, and close-tolerance through-hole drilling. Regular spiral fluting provides consistent chip evacuation without coolant-through requirements.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point reduces entry thrust and minimizes bit walking on hard materials\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, parallel web construction improves chip flow and reduces heat buildup\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with coated finish for extended tool life in ferrous materials\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body increases rigidity and reduces deflection in short-reach applications\u003c\/li\u003e\n  \u003cli\u003eDiameter held to +0.0000 to -0.0007 inches per ISO and NAS 907 standards\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, 2-flute spiral configuration for efficient chip evacuation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for drilling cast iron and steel. Compatible with standard drill chucks and quick-change tooling systems accepting a straight-cylindrical shank. Fits Series 2159 tooling requirements per NAS 907 and ISO specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and serviced by machinists, tool and die professionals, and skilled tradespeople operating drill presses, lathes, or CNC equipment. Before changing or setting a bit, ensure the machine is powered down and the spindle has come to a complete stop. Secure the shank fully within the chuck and verify runout before beginning a cut. Follow shop safety protocols and applicable OSHA machine guarding standards when operating rotating tooling.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.228 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-5\/16 inches\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: Spiral, 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\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\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\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: Heavy-Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0007 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Size Range\u003c\/strong\u003e: 0.2000 to 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ISO, NAS 907\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2159\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 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: CHICAGO-LATROBE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 48371\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51749372428594,"sku":"48371","price":15.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2b85f32bd1b13f3607fd892b932c37f7.jpg?v=1788905175","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-48371-screw-machine-drill-bit-0-228-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}