{"product_id":"hertel-74131145-cobalt-screw-machine-drill-bit-letter-b","title":"Hertel 74131145 Cobalt Screw Machine Drill Bit Letter B","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 74131145 is a cobalt screw machine length drill bit sized at Letter B (0.2380 inches decimal equivalent) with a 135-degree split point angle. Screw machine length bits are shorter than jobber length, which improves rigidity and reduces deflection in production drilling and tight-clearance applications. The split point geometry enables self-centering on contact, eliminating the need for a center punch on most materials. The 2-flute regular spiral flute design provides efficient chip evacuation. This bit is suited for licensed trades and production shops drilling steel, stainless, cast iron, and other hard or abrasive materials where standard HSS tooling wears prematurely.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is used in screw machine operations, CNC drilling, manual drill press work, and hand drill applications where a compact, rigid bit is required. The straight cylindrical shank fits standard drill chucks without adapters. Right-hand cutting direction is standard for conventional clockwise-rotating spindles. Typical installers include millwrights, pipefitters, and electricians drilling through structural steel, pipe flanges, electrical enclosures, and similar hard substrates. The web-thinned parallel web configuration reduces thrust force on entry, which is valuable when drilling harder alloys by hand or on lower-torque equipment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction resists heat and wear when cutting hardened steel, stainless steel, and abrasive alloys\u003c\/li\u003e\n  \u003cli\u003e135-degree split point self-centers on contact and reduces walking without a center punch\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned parallel web lowers thrust requirements, reducing operator fatigue and spindle load\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length improves rigidity and reduces deflection compared to jobber length bits\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank fits standard 3-jaw drill chucks on drill presses, CNC machines, and hand drills\u003c\/li\u003e\n  \u003cli\u003e2-flute regular spiral design promotes efficient chip clearing in through-hole and deep drilling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard screw machine length drill bit with a straight cylindrical shank, compatible with any drill press, CNC drilling machine, or hand drill equipped with a chuck sized to accept a straight shank in the Letter B (0.2380 inch) range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed by machinists, millwrights, pipefitters, and electricians using standard drill chucks. Ensure the chuck is fully tightened and the workpiece is securely clamped before drilling. Use appropriate cutting fluid or coolant when drilling hard alloys to extend tool life. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point geometry is compromised.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2380 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.2000 to 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: Straw\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 Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HSCO135\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241635\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 74131145\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51742437343538,"sku":"74131145","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0001976442d5d0a70b5ead4648b1b32e.jpg?v=1788837459","url":"https:\/\/voomisupply.com\/products\/hertel-74131145-cobalt-screw-machine-drill-bit-letter-b","provider":"Voomi Supply","version":"1.0","type":"link"}