{"product_id":"chicago-latrobe-49385-screw-machine-drill-bit-0-18-in-hss","title":"Chicago-latrobe 49385 Screw Machine Drill Bit 0.18 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CHICAGO-LATROBE 49385 is a screw machine length drill bit designed for high-speed steel cutting in demanding industrial and trade applications. Built to Series 159 standards, it features a 0.18 inch diameter, a 135-degree split point, and a web-thinned parallel web configuration that reduces thrust and improves chip clearing. The straight-cylindrical shank and two-flute spiral design allow smooth, consistent cutting in tight setups where stub-length tooling is required. NAS 907 specification compliance makes this bit suitable for precision drilling work in both production and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis bit is rated for use on cast iron and steel workpieces, making it a practical choice for HVAC fabrication, mechanical contractors, pipefitters, and general industrial machinists. The screw machine length — shorter than a jobber-length bit — provides added rigidity and is well suited for drill press, turret lathe, and CNC operations where runout control matters. The coated finish adds surface hardness and helps extend tool life under continuous-duty conditions.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point reduces walking and lowers required feed force\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, parallel web construction improves chip evacuation\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction handles steel and cast iron workpieces\u003c\/li\u003e\n\u003cli\u003eScrew machine length provides extra rigidity compared to jobber-length bits\u003c\/li\u003e\n\u003cli\u003eRight-hand cut spiral flute with straight-cylindrical shank for standard chuck compatibility\u003c\/li\u003e\n\u003cli\u003eNAS 907 and ISO specification compliance for precision applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement for Series 159 screw machine length drill bits in standard three-jaw and collet chucks accepting a 0.18 inch straight-cylindrical shank. Primary workpiece compatibility includes cast iron and steel.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or trade professionals familiar with rotating cutting tools. Secure the shank fully in the chuck and verify runout before drilling. Always power down the drill press, lathe, or CNC spindle completely before changing or inspecting the bit. Use appropriate cutting fluid for the workpiece material to manage heat buildup and extend tool life.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: #15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.0625 inches\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\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\u003eFlute Type\u003c\/strong\u003e: Spiral\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\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\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel\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\u003eSeries\u003c\/strong\u003e: 159\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: NAS 907, ISO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0132 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: CHICAGO-LATROBE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 49385\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51734728868146,"sku":"49385","price":44.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6f4f00ed46c9dcaf6d6ede568fdb44f9.jpg?v=1788766217","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-49385-screw-machine-drill-bit-0-18-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}