{"product_id":"chicago-latrobe-46616-cobalt-jobber-drill-bit-1-4-in","title":"Chicago-latrobe 46616 Cobalt Jobber Drill Bit 1\/4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 46616 is a cobalt jobber-length drill bit engineered for high-performance drilling in hard and abrasive materials. Built from M42 cobalt high-speed steel and finished with a gold oxide coating, it delivers extended tool life where standard HSS bits fail. The 135-degree split point reduces walking and cutting force at entry, making it well suited for production drilling without a center punch. With a 4-inch overall length and a straight-cylindrical shank, the 46616 fits standard drill chucks and is sized for everyday trade use on the bench or in the field.\u003c\/p\u003e\n\u003cp\u003eThis bit is rated for drilling titanium and other high-strength metals, making it a common choice for HVAC fabricators, pipefitters, sheet metal workers, and industrial maintenance techs working with tough alloys. The 1\/4-inch diameter with a 2-3\/4-inch flute length handles through-holes in structural plate, angle iron, and hard stainless components. Compliant with DIN 338 and NAS 907 Type J standards, it meets requirements found in aerospace and commercial fabrication environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt steel construction resists heat buildup during high-speed drilling in hard metals\u003c\/li\u003e\n  \u003cli\u003e135-degree split point starts on contact and reduces thrust force compared to standard 118-degree tips\u003c\/li\u003e\n  \u003cli\u003eGold oxide coating provides lubricity and corrosion resistance during cutting\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web design improves chip evacuation and reduces bit deflection\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute clears chips efficiently in through-hole applications\u003c\/li\u003e\n  \u003cli\u003eMeets DIN 338 and NAS 907 Type J standards for dimensional and performance consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for primary use in titanium per NAS 907 Type J specification. Also suitable for drilling cobalt alloys, stainless steel, and other high-strength ferrous and non-ferrous metals. Fits any standard 1\/4-inch keyless or keyed drill chuck.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eUse in a variable-speed drill press or hand drill set to the appropriate RPM for the workpiece material and bit diameter. Secure the workpiece fully before drilling to prevent movement. Apply cutting fluid when drilling titanium or stainless to manage heat and extend bit life. Inspect the cutting edges before each use and retire the bit if chipping or excessive wear is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2-3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.2500 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\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\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\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: Cobalt (M42 Grade)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Gold Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium\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\u003eStandards\u003c\/strong\u003e: DIN 338, NAS 907 Type J\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 550\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0501 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: 46616\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51747661906226,"sku":"46616","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5e18f3a73fcc1e869d3fccf79cdc8be4_8ef0e065-e768-44f9-ad32-505c4a0c586a.jpg?v=1788884216","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-46616-cobalt-jobber-drill-bit-1-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}