{"product_id":"hertel-42129-cobalt-jobber-drill-bit-1-8-inch-135-degree","title":"Hertel 42129 Cobalt Jobber Drill Bit 1\/8 Inch 135 Degree","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 42129 is a cobalt jobber-length drill bit engineered for drilling stainless steel, hardened materials, and other tough alloys that defeat standard high-speed steel tooling. Built to M35 cobalt material grade, the bit carries a 135-degree split-point geometry that reduces walking on entry and lowers the thrust required to penetrate hard workpieces. The straight cylindrical shank fits standard drill chucks without a reducer. At 2.75 inches overall length with a 1.625-inch flute, this is a standard jobber-series proportioned tool suited to bench drill presses, hand drills, and drill motors used daily in fabrication, mechanical, and maintenance work.\u003c\/p\u003e\u003cp\u003eThis bit is sized at 0.125 inches (1\/8 inch) diameter and is intended for production and maintenance applications where heat buildup and work hardening are common concerns. The regular spiral flute at a 5xD ratio clears chips efficiently without packing. Right-hand cutting direction matches conventional drill press and hand drill operation. No coolant-through feature is present, so flood or mist coolant must be applied externally when drilling deep holes in stainless or hardened material. It ships individually and is sold at a minimum order quantity of 12 units.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM35 cobalt material grade handles stainless steel and hardened workpieces\u003c\/li\u003e\n\u003cli\u003e135-degree split-point tip reduces bit walking and lowers feed pressure\u003c\/li\u003e\n\u003cli\u003eRegular spiral flute with 5xD ratio promotes efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eOxide finish provides mild heat resistance and surface protection\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction, 2-flute configuration for clean hole finish\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, hand drill, or drill motor accepting a straight cylindrical shank. Primary workpiece materials listed by the manufacturer are stainless steel and hardened materials.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall and service by a qualified machinist or maintenance technician. Secure the workpiece firmly before drilling to prevent rotation or movement. Apply external cutting fluid or mist coolant when drilling stainless steel or hardened alloys to manage heat and extend tool life. Inspect the cutting edges before each use and replace any bit showing chipping, dullness, or deformation to maintain hole quality and operator safety.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 1\/8 inch (0.1250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.75 inches (2-3\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.625 inches (1-5\/8 inch)\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 Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M35 Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide (Straw\/Uncoated Bright)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular (5xD Ratio)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Hardened Materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\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: 42129\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51749355520306,"sku":"42129","price":40.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/21501589525d0490fbbd5becb0cde258.jpg?v=1788904901","url":"https:\/\/voomisupply.com\/products\/hertel-42129-cobalt-jobber-drill-bit-1-8-inch-135-degree","provider":"Voomi Supply","version":"1.0","type":"link"}