{"product_id":"hertel-66693938-jobber-drill-bit-letter-t-hss-tin","title":"Hertel 66693938 Jobber Drill Bit Letter T Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 66693938 is a letter-size T jobber-length drill bit designed for production holemaking in metal and similar materials. Built from high speed steel (HSS) with a titanium nitride (TiN) coating, the bit delivers extended tool life and reduced friction compared to uncoated HSS. The 135-degree split point starts on contact without a center punch and reduces walking on flat or curved workpieces. With an overall length of 4-7\/8 inches and a flute length of 3-1\/2 inches, it handles standard jobber-depth holes efficiently. This bit is installed and used by machinists, maintenance technicians, pipefitters, and general trade professionals working with drill presses or handheld power drills.\u003c\/p\u003e\u003cp\u003eThe 66693938 is suited for general-purpose drilling in ferrous metals, non-ferrous metals, and hard plastics. The straight-cylindrical shank at 0.358 inches diameter fits standard 3-jaw drill chucks across benchtop drill presses, magnetic drill presses, and hand drills. The right-hand spiral flute geometry evacuates chips efficiently during through-hole and blind-hole drilling. It is designated to NAS specification standards, making it appropriate for maintenance, repair, and light manufacturing environments where dimensional accuracy and consistent performance are required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point starts on contact and self-centers without a center punch\u003c\/li\u003e\n\u003cli\u003eTiN coating extends tool life and reduces heat buildup during cutting\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction rated for heavy-duty drill bit grade applications\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web configuration reduces thrust and improves chip flow\u003c\/li\u003e\n\u003cli\u003eRight-hand, regular spiral flute for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eNAS specification designation for consistent manufacturing standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a jobber-length drill bit with a 0.358-inch straight-cylindrical shank, compatible with any standard 3-jaw drill chuck that accepts shank diameters in the 0.3500 to 0.4000 inch range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall and remove drill bits only with the drill or drill press fully powered off and the chuck key removed from the chuck. Secure the workpiece with a clamp or vise before drilling  -  never hand-hold metal workpieces against a drill press. Use appropriate cutting fluid for ferrous metals to extend bit life and maintain bore quality. Inspect the cutting edges for wear before each use; a dull bit increases thrust, generates excess heat, and reduces hole accuracy.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: Letter T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3580 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\u003eDrill Bit Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-7\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3580 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\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: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble Margin\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Jobber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification Designation\u003c\/strong\u003e: NAS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 66693938\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51740778398002,"sku":"66693938","price":22.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c2fcbff37f366054bfc0b0e4e6425be0.jpg?v=1788827386","url":"https:\/\/voomisupply.com\/products\/hertel-66693938-jobber-drill-bit-letter-t-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}