{"product_id":"hertel-84580950-jobber-drill-bit-no-21-hss-135-deg","title":"Hertel 84580950 Jobber Drill Bit No. 21 Hss 135 Deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 84580950 is a high speed steel jobber-length drill bit sized to wire gauge No. 21, equivalent to 0.1590 inches in diameter. It features a 135-degree split point for fast penetration and reduced walking on entry, along with an oxide coating that provides basic lubricity and corrosion resistance during use. The overall length is 3.25 inches with a flute length of 2.125 inches. This bit is designed for heavy-duty holemaking in metal and other common trade materials. It is used by HVAC technicians, plumbers, electricians, and general tradespeople who need a reliable, standard-tolerance twist drill for everyday production drilling.\u003c\/p\u003e\u003cp\u003eThis jobber drill is suited for general-purpose holemaking applications in sheet metal, mild steel, aluminum, and similar materials. The No. 21 wire size is commonly used in trades for pilot holes, clearance holes, and tapping pre-drill operations where a 0.1590-inch diameter is specified. The straight cylindrical shank fits standard 3-jaw drill chucks on corded and cordless drills as well as drill presses. A regular spiral and tapered web configuration support chip evacuation in through-hole and blind-hole drilling scenarios.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point reduces thrust force and prevents bit walking on smooth surfaces\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web configuration promotes efficient chip clearing\u003c\/li\u003e\n\u003cli\u003eOxide coating improves surface lubricity and light corrosion resistance\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting spiral flute with 2-flute geometry for standard twist drilling\u003c\/li\u003e\n\u003cli\u003eHeavy-duty grade high speed steel construction for repeated use in production environments\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 standard jobber-length drill bit for use in any 3-jaw chuck accepting a 0.1590-inch straight cylindrical shank, including handheld drills and drill presses commonly used in HVAC, plumbing, and electrical trade applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should follow standard machine shop and trade safety practices. Secure the workpiece firmly before drilling and ensure the chuck is fully tightened before applying power. Use cutting fluid when drilling ferrous metals to extend bit life and improve hole quality. 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 (Wire)\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\u003eOverall Length\u003c\/strong\u003e: 3.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1590 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\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\u003eSpecification Designation\u003c\/strong\u003e: NAS\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: 0.2 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: 84580950\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51749428068658,"sku":"84580950","price":40.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/890f0cb7605ae101d66c3891823eb2c5.jpg?v=1788905966","url":"https:\/\/voomisupply.com\/products\/hertel-84580950-jobber-drill-bit-no-21-hss-135-deg","provider":"Voomi Supply","version":"1.0","type":"link"}