{"product_id":"hertel-66694191-jobber-drill-bit-wire-20-hss-tin","title":"Hertel 66694191 Jobber Drill Bit Wire 20 Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 66694191 is a high speed steel jobber-length drill bit sized to wire gauge No. 20 (0.1610 inches decimal equivalent), designed for general-purpose holemaking in metal, wood, and composite materials. The 135-degree split point self-centers on contact, reducing the need for a center punch and minimizing walking on smooth surfaces. A titanium nitride (TiN) coating reduces friction and extends cutting life compared to uncoated HSS tooling. The two-flute spiral design with a regular helix evacuates chips efficiently through the full depth of the cut. This bit is classified as heavy duty grade and meets NAS specification standards.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for production and maintenance drilling operations where wire-gauge sizing is specified. The 3.25-inch overall length and 2.125-inch flute length provide adequate reach for standard stock thicknesses. The straight cylindrical shank at 0.1610 inches diameter seats securely in standard three-jaw Jacobs chucks and keyless chucks on benchtop drill presses, hand drills, and CNC drilling setups. Right-hand cutting direction is the universal standard for conventional drilling operations. Typical users include machinists, maintenance technicians, and electricians requiring precise small-diameter hole placement.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire gauge No. 20 sizing  -  0.1610 inches decimal equivalent for precise hole tolerancing\u003c\/li\u003e\n\u003cli\u003e135-degree split point with web thinning for self-centering entry and reduced thrust force\u003c\/li\u003e\n\u003cli\u003eTiN coating extends tool life and lowers cutting friction versus bare HSS\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with heavy duty grade rating\u003c\/li\u003e\n\u003cli\u003eRegular spiral, tapered web geometry supports consistent chip evacuation\u003c\/li\u003e\n\u003cli\u003eNAS specification designation for conformance to aerospace and industrial standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard jobber-length drill bit for use in any three-jaw chuck or keyless chuck accepting a straight cylindrical shank at 0.1610 inches diameter, including benchtop drill presses, portable hand drills, and CNC drilling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the shank fully into the chuck and tighten before operation  -  partial engagement increases runout and can cause bit breakage at small diameters. Ensure the workpiece is clamped or fixtured before starting the cut; freehand holding is not appropriate for drill press use. Apply cutting fluid or cutting oil when drilling ferrous metals to preserve the TiN coating and extend tool life. Inspect the cutting edges for chipping before each use; a chipped split-point tip will produce oversized holes and excessive heat.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: No. 20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1610 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\u003eWeb\u003c\/strong\u003e: Web-thinned, tapered configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\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: 2.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 3.25 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: 0.1610 inches\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\u003c\/strong\u003e: NAS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 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: 66694191\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51739569422642,"sku":"66694191","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dfb4d77e59c04b769beee0eba122aa24.jpg?v=1788816428","url":"https:\/\/voomisupply.com\/products\/hertel-66694191-jobber-drill-bit-wire-20-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}