{"product_id":"chicago-latrobe-41679-no-9-hss-tin-drill-bit-135deg","title":"Chicago-latrobe 41679 No. 9 Hss Tin Drill Bit 135deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CHICAGO-LATROBE 41679 is a jobber-length drill bit in wire gauge No. 9 (0.1960 inches) ground from high speed steel and finished with a titanium nitride (TiN) coating. The 135-degree split point reduces walking and cutting force at startup, making it effective for production and precision work. A web-thinned, tapered web construction lowers thrust requirements and improves chip evacuation. Overall length is 3-5\/8 inches with a 2-7\/16 inch spiral flute. The straight-cylindrical shank measures 1-3\/16 inches in diameter. This is a heavy-duty, high-performance bit suited for machinists, toolroom technicians, and maintenance tradespeople who drill daily.\u003c\/p\u003e\u003cp\u003eThe 41679 is designed for use in ferrous materials including cast iron, stainless steel, and carbon steel. The TiN coating extends cutting life in abrasive and work-hardening materials compared to uncoated HSS. The regular spiral flute geometry and right-hand cut configuration make this bit compatible with standard drill presses, CNC machining centers, and handheld power drills equipped with a keyless or keyed chuck. It is packaged as a single unit and meets NAS 907 Type B standards, making it appropriate for aerospace-adjacent maintenance and repair operations as well as general industrial use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire gauge No. 9 diameter — 0.1960 inches — with a diameter tolerance of -0.0007 to 0.0000 inches for precision fitment\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and minimizes bit walk on hard or curved surfaces\u003c\/li\u003e\n\u003cli\u003eTitanium nitride (TiN) coating improves surface hardness and extends tool life in ferrous materials\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web reduces cutting resistance and promotes chip clearing\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, regular spiral flute for use with standard drilling equipment\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 Type B specification — suitable for MRO and precision industrial applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eRated for drilling cast iron, stainless steel, and steel. Compatible with standard straight-shank drill chucks. Coolant-through is not supported on this bit. Series 150ASP-TN.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall and remove the bit only with the drill fully powered down and unplugged or locked out per applicable LOTO procedures. Secure the straight-cylindrical shank fully in the chuck jaws and tighten before operation. Use cutting fluid appropriate for the workpiece material when drilling stainless steel or hardened steel to maintain edge life. Inspect the cutting edge and TiN coating before each use — a chipped or worn point should be reground or the bit replaced before drilling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1960 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2-7\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1-3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.1875 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\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\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\u003eDiameter Tolerance\u003c\/strong\u003e: -0.0007 to 0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: NAS 907 Type B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 150ASP-TN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 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: 41679\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51728857170226,"sku":"41679","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/661cb0d75964889ab0121bc5728827e9.jpg?v=1788696959","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-41679-no-9-hss-tin-drill-bit-135deg","provider":"Voomi Supply","version":"1.0","type":"link"}