{"product_id":"hertel-84581297-jobber-drill-bit-no-55-hss-135-degree","title":"Hertel 84581297 Jobber Drill Bit No 55 Hss 135 Degree","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 84581297 is a wire-size No. 55 jobber-length drill bit designed for precision holemaking in metal and general industrial applications. Built from high speed steel with an oxide coating, this bit resists heat and surface wear during drilling. The 135-degree split point starts on contact without a center punch and reduces walking on smooth surfaces. At 1.875 inches overall length with a 0.875-inch flute, it fits standard drill chucks in benchtop and handheld configurations. The straight-cylindrical shank measures 0.0520 inches in diameter, matching the 0.0520-inch cutting diameter exactly. This is a heavy-duty grade bit suited for production environments where small-diameter accuracy matters.\u003c\/p\u003e\u003cp\u003eThe No. 55 wire-size designation corresponds to a 0.0520-inch decimal diameter, placing it in the 0.0500 to 0.1000 inch size range. It is used in light metalworking, electronics fabrication, tool and die work, and maintenance applications where small clearance holes or pilot holes are required. The spiral flute configuration is regular, optimized for chip evacuation in through-hole drilling. Installation and use are appropriate for machinists, maintenance technicians, and trade professionals running drill presses or hand drills. The NAS specification designation indicates conformance to aerospace and industrial standards for geometry and material.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 55 wire size, 0.0520-inch decimal diameter for tight-tolerance small-hole work\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and eliminates the need for a center punch on flat surfaces\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with oxide coating for heat and wear resistance\u003c\/li\u003e\n\u003cli\u003eRegular spiral flute with tapered web thinning for efficient chip clearance\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eHeavy-duty grade with NAS specification conformance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a jobber-length replacement drill bit for standard straight-shank drill chucks accepting 0.0520-inch shank diameters, suitable for drill presses, hand drills, and CNC drilling operations in light industrial and maintenance applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or maintenance technicians familiar with small-diameter drill bit handling. Secure the straight shank fully in the chuck before applying torque. When drilling hardened or dense materials, use appropriate cutting fluid to extend tool life and maintain hole tolerances. Inspect the split point for chipping or wear before each use, as small-diameter bits are susceptible to breakage under side loading or excessive feed pressure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 55\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0520 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 Length\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.0520 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eDrill Bit Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification Designation\u003c\/strong\u003e: NAS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\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\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: 84581297\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51735325311282,"sku":"84581297","price":44.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ade2498b0b6c22c24da7a59ff3ce5217.jpg?v=1788771890","url":"https:\/\/voomisupply.com\/products\/hertel-84581297-jobber-drill-bit-no-55-hss-135-degree","provider":"Voomi Supply","version":"1.0","type":"link"}