{"product_id":"chicago-latrobe-45782-letter-l-hss-jobber-drill-bit","title":"Chicago-latrobe 45782 Letter L Hss Jobber Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CHICAGO-LATROBE 45782 is a jobber-length drill bit sized to Letter L (0.2900 inches) and built for demanding production and maintenance drilling applications. The bit is machined from high speed steel with an oxide coating for added lubricity and corrosion resistance. The 135-degree split point geometry reduces walking on contact and lowers thrust requirements compared to a conventional 118-degree point. A tapered, web-thinned web and two regular-spiral flutes clear chips efficiently in deep-hole passes. This is a heavy-duty Series 150ASP bit meeting NAS 907 Type B standards, suited for use by machinists, maintenance mechanics, and industrial tradespeople.\u003c\/p\u003e\u003cp\u003eThis bit is intended for drilling cast iron, stainless steel, and carbon steel in both shop and field environments. The straight-cylindrical shank fits standard 3-jaw drill chucks on corded drills, drill presses, and CNC machining centers. The 135-degree split point and web-thinned construction make it particularly effective on harder ferrous materials where a conventional point would deflect or require excessive feed force. Sold individually, it is a direct replacement or supplemental bit for any application requiring a Letter L diameter hole.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter L diameter: 0.2900 inches with a tight tolerance of -0.0010 to 0.0000 inches\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces walking and lowers required feed pressure on hard materials\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with oxide coating for improved lubricity and surface protection\u003c\/li\u003e\n\u003cli\u003eTapered, web-thinned web improves chip evacuation and reduces heat buildup in the cut zone\u003c\/li\u003e\n\u003cli\u003eTwo regular-spiral flutes with a flute length of 2-15\/16 inches for deep-hole chip clearing\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 Type B specification — Heavy Duty Series 150ASP grade\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or stock bit for any application requiring a Letter L (0.2900-inch) straight-shank jobber-length drill bit; compatible with standard 3-jaw drill chucks accepting a 0.2900-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this bit should be performed by a qualified machinist or trained tradesperson familiar with rotating cutting tools. Ensure the drill chuck is fully tightened and the workpiece is securely clamped or fixtured before starting the cut. Appropriate cutting fluid or coolant is recommended when drilling stainless steel to manage heat and extend bit life; this bit does not feature coolant-through capability. Always wear appropriate eye protection and follow applicable shop safety standards when operating drilling equipment.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2900 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2-15\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2900 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.3125 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\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Stainless Steel, Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 150ASP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: NAS 907 Type B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.0010 to 0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0574 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: 45782\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51727532818738,"sku":"45782","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/782460eef0061e5342807dea23a26913.jpg?v=1788678950","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-45782-letter-l-hss-jobber-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}