{"product_id":"hertel-04139176-jobber-drill-70-wire-135-deg-cobalt","title":"Hertel 04139176 Jobber Drill 70 Wire 135 Deg Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 04139176 is a cobalt jobber-length drill bit in wire gauge size 70, with a decimal diameter of 0.0280 inches and an overall length of 1.25 inches. It features a 135-degree split point for self-centering entry and reduced walking on hard or work-hardened materials. The cutting geometry includes a regular spiral flute, web-thinned tapered web, and right-hand cutting direction. An oxide and TiN coating provides surface hardness and heat resistance. This is a heavy-duty grade bit suited to precision holemaking in metalworking, maintenance, and fabrication applications.\u003c\/p\u003e\u003cp\u003eWire gauge size 70 drill bits are used in applications requiring very small-diameter through-holes, including tapping pilot holes, instrument and electronic enclosure work, small-fastener clearance holes, and precision metalworking tasks. The straight-cylindrical shank at 0.0280 inches fits standard drill chucks sized for small-diameter tooling. The jobber-length series balances reach and rigidity for benchtop drill presses, hand drills, and CNC drilling operations where consistent hole quality is required in tight tolerances.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire gauge size 70 with 0.0280-inch decimal diameter for precision small-hole drilling\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and self-centers on entry without a center punch\u003c\/li\u003e\n\u003cli\u003eCobalt construction resists heat buildup when drilling stainless steel, hardened alloys, and cast iron\u003c\/li\u003e\n\u003cli\u003eOxide and TiN dual coating improves surface hardness and extends tool life\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web lowers cutting resistance and improves chip evacuation\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard small-capacity drill chucks without adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a jobber-series replacement or stock bit for standard drill chucks accepting a 0.0280-inch straight-cylindrical shank in benchtop, hand-held, or CNC drilling setups.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed and removed by a qualified machinist or technician using a compatible drill chuck rated for small-diameter tooling. Secure the shank fully in the chuck and verify runout before beginning a cut. Use appropriate cutting fluid for the workpiece material to extend bit life and maintain hole quality. Do not exceed the recommended speed-and-feed range for the bit diameter and material being drilled, as small-diameter cobalt bits are susceptible to breakage under side load or excessive feed pressure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: 70\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0280 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\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\u003eFlute Length\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.0280 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide and TiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Jobber\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\u003eWeight\u003c\/strong\u003e: 0.01 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: 04139176\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51739250458930,"sku":"04139176","price":151.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1a268cd58a88a0e2ce853d5e0d026885.jpg?v=1788812107","url":"https:\/\/voomisupply.com\/products\/hertel-04139176-jobber-drill-70-wire-135-deg-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}