{"product_id":"hertel-85707438-jobber-drill-bit-no-21-hss-tin","title":"Hertel 85707438 Jobber Drill Bit No. 21 Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 85707438 is a jobber-length twist drill bit sized to wire gauge No. 21, with a decimal diameter of 0.1590 inches. Constructed from high speed steel (HSS) with a titanium nitride (TiN) coating, this bit is built for general-purpose drilling across metal, wood, and plastic substrates. The 118-degree standard point angle suits a wide range of materials without requiring a dedicated point geometry. With an overall length of 3.25 inches and a flute length of 2.125 inches, it fits standard drill chucks and benchtop drill presses used daily in trade and production environments. Licensed machinists, maintenance technicians, and fabricators are the primary users.\u003c\/p\u003e\u003cp\u003eThis bit is suited for general-purpose hole-making in light to medium-duty applications. The straight-cylindrical shank with a diameter of 0.1590 inches seats securely in keyless and keyed drill chucks. The regular spiral flute geometry with a tapered web and web-thinned point supports efficient chip evacuation during through-hole drilling. It is appropriate for use in handheld drills, drill presses, and light CNC or turret setups where a standard jobber-length reach is sufficient.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire gauge No. 21 size, 0.1590 inch decimal diameter for precise hole sizing\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with TiN coating for extended wear resistance\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle for broad material compatibility\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web point reduces thrust and improves penetration\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, regular spiral flute promotes consistent chip removal\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose jobber-length drill bit for use in standard 3-jaw drill chucks accepting a 0.1590 inch straight shank, including handheld drills, drill presses, and compatible light machine tool setups.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the shank fully in the chuck jaws before applying power and verify the bit runs true before drilling. Always power down and isolate the drill press or handheld tool before changing bits. Use appropriate cutting fluid when drilling ferrous metals to extend bit life. Follow applicable shop safety practices and PPE requirements when operating rotary cutting tools.\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. 21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1590 inches\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\u003eCoating\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\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 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\u003eFlute Length\u003c\/strong\u003e: 2.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\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: 0.1590 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 85707438\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51732027474226,"sku":"85707438","price":52.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c1f66734ee7750735c5d71cd5bbd3afb.jpg?v=1788738328","url":"https:\/\/voomisupply.com\/products\/hertel-85707438-jobber-drill-bit-no-21-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}