{"product_id":"hertel-42093-cobalt-jobber-drill-bit-8-5-mm-135-degree","title":"Hertel 42093 Cobalt Jobber Drill Bit 8.5 Mm 135 Degree","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 42093 is a cobalt jobber length drill bit sized at 8.5 mm (0.3346 inches) with a 135-degree split point. Built from M35 cobalt steel and finished with an oxide and gold coating, it is designed for drilling tough materials including stainless steel, high-alloy steels, and hardened metals. The two-flute spiral design with a regular helix promotes efficient chip evacuation. Overall length is 117 mm (4.61 inches), with a flute length of 75 mm (2.95 inches). The straight cylindrical shank seats in standard drill chucks. Machinists, maintenance mechanics, and metalworking trades use this bit for general-purpose and demanding production drilling applications.\u003c\/p\u003e\u003cp\u003eThis drill bit fits into production machining, toolroom work, and field maintenance scenarios where standard high-speed steel tooling lacks the heat and wear resistance needed. The 8.5 mm diameter places it in the 8.00 to 9.00 mm size range, making it a common selection for metric tap clearance holes, reamed bore preparation, and close-tolerance through-holes in ferrous and non-ferrous workpieces. It is sold individually and is compatible with any drill press, CNC machining center, or hand drill with a chuck capacity that accepts the straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM35 cobalt steel construction for improved heat resistance and tool life in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eOxide and gold coating reduces friction and provides visual wear indication\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and improves self-centering on hard surfaces\u003c\/li\u003e\n\u003cli\u003eTwo-flute regular spiral promotes positive chip clearance during through-hole drilling\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eNo coolant-through requirement simplifies setup in general shop and field environments\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 drill press, machining center, or hand drill with a chuck capacity accommodating an 8.5 mm straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or mechanics familiar with rotating cutting tools. Secure the workpiece fully before drilling to prevent movement. Use appropriate cutting fluid for ferrous materials to extend tool life, even though the bit does not require coolant-through delivery. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 8.5 mm (0.3346 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt (M35)\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\u003eCoating\/Finish\u003c\/strong\u003e: Oxide and Gold\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: 75 mm (2.95 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 117 mm (4.61 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.14 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: 42093\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51735446126898,"sku":"42093","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/60619e658189c1c8a237ca98910fb752.jpg?v=1788772489","url":"https:\/\/voomisupply.com\/products\/hertel-42093-cobalt-jobber-drill-bit-8-5-mm-135-degree","provider":"Voomi Supply","version":"1.0","type":"link"}