{"product_id":"precision-twist-drill-5998141-cobalt-jobber-drill-11-32-in","title":"Precision Twist Drill 5998141 Cobalt Jobber Drill 11\/32 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5998141 is a cobalt jobber-length drill bit designed for heavy-duty drilling in ferrous and non-ferrous metals. Built from cobalt high-speed steel with a straw oxide finish, it handles elevated heat better than standard HSS bits, making it a reliable choice for production and maintenance drilling in steel and similar alloys. The 135-degree split-point geometry reduces walking on contact and requires less thrust to initiate a cut. At 4.75 inches overall length with a 3.4375-inch flute, it delivers the reach and chip-clearing capacity needed for most through-hole applications in structural and sheet stock.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is sized at 11\/32 inch (0.3438 inch decimal) and is suited for general-purpose drilling in steel, stainless, cast iron, aluminum, and plastics. The straight cylindrical shank fits standard 3-jaw chucks on drill presses, hand drills, and CNC drilling spindles. A two-flute regular spiral configuration promotes efficient chip evacuation in both hand-held and machine setups. Machinists, millwrights, pipefitters, and maintenance technicians working in light manufacturing, fabrication shops, or field service will find it a capable everyday bit for hole sizing, clearance holes, and production runs.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt high-speed steel construction for improved heat and wear resistance in steel drilling\u003c\/li\u003e\n  \u003cli\u003e135-degree split-point tip reduces bit walking and lowers required feed pressure\u003c\/li\u003e\n  \u003cli\u003eStraw oxide finish provides mild lubricity and corrosion resistance during storage and use\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web for reduced chisel-edge width and easier penetration\u003c\/li\u003e\n  \u003cli\u003eRegular two-flute spiral for reliable chip evacuation in through-hole and blind-hole applications\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI and NAS 907 standards for heavy-duty jobber drill geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard straight-shank drill chucks across handheld drills, drill presses, and CNC drilling machines. Belongs to the R10CO-R15CO-R18CO series. Compatible with primary workpiece materials coded P, M, K, N, and S, covering steel, stainless steel, cast iron, non-ferrous metals, and superalloys per ISO material classification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSecure the straight shank fully in a properly sized drill chuck before operation. Coolant-through capability is not supported on this bit, so apply cutting fluid externally when drilling hard or thick steel to manage heat buildup. Reduce feed rate and use adequate clamping when drilling thin stock to avoid breakthrough grab. Inspect the cutting edges before use and replace if chipping or excessive wear is present.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 11\/32 inch (0.3438 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt High Speed Steel\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: Standard Split Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3-7\/16 inches (3.4375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-3\/4 inches (4.75 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 11\/32 inch (0.3438 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1-5\/16 inches (1.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 3-7\/16 inches (3.4375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 10xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NAS 907\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R10CO-R15CO-R18CO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.083 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: PRECISION TWIST DRILL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5998141\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51699798573362,"sku":"5998141","price":24.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/48612cbca6d09eb9dfe2c82cf07b8e8a_82fc9803-2315-4bd5-b990-d72c976ea3c5.jpg?v=1788381152","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998141-cobalt-jobber-drill-11-32-in","provider":"Voomi Supply","version":"1.0","type":"link"}