{"product_id":"chicago-latrobe-48401-screw-machine-drill-bit-hss-31","title":"Chicago-latrobe 48401 Screw Machine Drill Bit Hss 31","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 48401 is a screw machine length drill bit engineered for heavy-duty drilling applications in cast iron and steel. It measures 0.12 inches (wire size 31) in diameter with an overall length of 1-7\/8 inches and a flute length of 7\/8 inch. The 135-degree split point reduces walking and cutting force at entry, and the web-thinned, parallel-web construction improves chip clearance. Manufactured from high speed steel with a coated finish, this bit delivers consistent performance in production and maintenance drilling environments. It is sized to the Series 2159 specification and carries NAS 907 designation for dimensional compliance.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for machinists, pipefitters, ironworkers, and general maintenance technicians working with cast iron and steel in both shop and field settings. The screw machine length body, shorter than a jobber bit, provides added rigidity in drill press, turret lathe, and CNC applications where stub reach is preferred. The 2-flute spiral configuration handles standard through-hole and blind-hole work at typical production feed rates. The straight cylindrical shank seats directly into standard chucks without adapters.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point reduces drill walk and lowers entry force on hard metals\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned parallel web improves chip evacuation and reduces thrust load\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body provides greater rigidity than jobber-length equivalents\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with coated finish for extended wear resistance\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, 2-flute spiral design handles cast iron and steel\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance of plus 0.0000 to minus 0.0005 inches for consistent hole sizing\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 and ISO standards for dimensional accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a Series 2159 screw machine length drill bit suitable for use in cast iron and steel with primary workpiece materials falling within the 0.1000 to 0.1500 inch decimal inch drill bit size range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and operated by machinists and trade technicians using standard 3-jaw drill chucks or collet-style tool holders. Secure the straight cylindrical shank fully in the chuck before operation to prevent runout. Use appropriate cutting fluid or coolant for extended drilling cycles in ferrous materials, noting that this bit does not support coolant-through operation. Inspect the cutting edges for wear before each use and replace the bit when point geometry degrades to avoid oversized holes or workpiece damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.12 inches (Wire Size 31)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-7\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 7\/8 inch\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\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: plus 0.0000 to minus 0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.1000 to 0.1500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2159\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: NAS 907 \/ NAS, ISO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 48401\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51738573177138,"sku":"48401","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a7f9a58d8b3cf08d7c3bb40014676d92.jpg?v=1788801160","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-48401-screw-machine-drill-bit-hss-31","provider":"Voomi Supply","version":"1.0","type":"link"}