{"product_id":"hertel-66693615-letter-x-screw-machine-drill-bit-hss-tin","title":"Hertel 66693615 Letter X Screw Machine Drill Bit Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 66693615 is a screw machine length drill bit sized at Letter X (0.3970 inches decimal) with a 135-degree split point and a titanium nitride (TiN) coating over a high-speed steel (HSS) body. The shorter-than-jobber overall length of 3-5\/16 inches provides added rigidity in screw machine and drill press applications, reducing deflection and improving hole accuracy. The web-thinned, split point geometry starts on contact without a center punch, and the TiN coating extends cutting edge life in ferrous and non-ferrous materials. This is a heavy-duty grade bit intended for production and repetitive drilling work by machinists and maintenance technicians.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for use in screw machines, CNC turret lathes, drill presses, and similar fixed-spindle equipment where a stubby, rigid cutting tool is preferred over standard jobber length. The 0.3970-inch diameter falls within the 0.3500 to 0.4000 inch size range category. It is appropriate for drilling steel, cast iron, aluminum, and similar materials in light manufacturing, tool-and-die, and industrial maintenance environments. No coolant-through capability is present, so external cutting fluid application is the appropriate approach for extended production runs.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter X size: 0.3970 inches decimal diameter for direct substitution in letter-size drill charts\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning starts on contact and self-centers without a punch\u003c\/li\u003e\n  \u003cli\u003eTiN coating increases surface hardness and reduces built-up edge in ferrous materials\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length at 3-5\/16 inches overall provides rigidity and minimizes runout\u003c\/li\u003e\n  \u003cli\u003eRegular spiral, 2-flute design with 1-15\/16 inch flute length clears chips efficiently\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank at 0.3970 inches fits standard drill chucks and collet systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct substitute for screw machine length drill bits in the Letter X size class; fits any standard drill chuck or collet accepting a 0.3970-inch straight shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a properly rated drill press, turret lathe, or CNC machine spindle. Secure the straight shank fully in the chuck or collet before operation and verify runout before committing to production work. Apply an appropriate cutting fluid externally since this bit has no coolant-through provision; dry running in steel will shorten coating life and edge retention. Inspect the cutting edges and web condition regularly during high-cycle production use.\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: X\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3970 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 Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\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: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-15\/16 inches (1.9375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3970 inches\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, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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: HSH135-TN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 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: 66693615\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51743330861362,"sku":"66693615","price":22.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/98b755932767f460e8775c6cab5f384f.jpg?v=1788845737","url":"https:\/\/voomisupply.com\/products\/hertel-66693615-letter-x-screw-machine-drill-bit-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}