{"product_id":"hertel-84580687-jobber-drill-bit-letter-u-0-3680-in-hss","title":"Hertel 84580687 Jobber Drill Bit Letter U 0.3680 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 84580687 is a Letter U jobber-length drill bit ground from high speed steel with a black oxide coating. It is sized at 0.3680 inches in diameter and features a 135-degree split point that reduces walking and lowers the thrust needed to start a hole. The two-flute spiral design with a web-thinned, tapered web promotes chip evacuation during holemaking. At 5 inches overall length with a 3-5\/8-inch flute length, it fits standard three-jaw chucks and collet holders without adapters. Right-hand cutting direction suits the vast majority of drill press and handheld applications. This bit is rated heavy duty and carries NAS specification designation.\u003c\/p\u003e\u003cp\u003eThis bit is used in general holemaking operations across metal fabrication, mechanical assembly, and maintenance repair work. It is suited for drilling steel, iron, and similar ferrous materials where an oxide-coated HSS tool is appropriate. The straight-cylindrical shank at 0.3680 inches diameter fits directly into standard drill chucks without a reduction sleeve. It is a single-piece per package item appropriate for technicians stocking individual sizes or replacing worn bits in a set.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point reduces center-punch dependency and lowers feed force\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web improves chip flow and reduces heat buildup at the tip\u003c\/li\u003e\n\u003cli\u003eBlack oxide coating provides mild lubricity and corrosion resistance during storage\u003c\/li\u003e\n\u003cli\u003eTwo regular spiral flutes clear chips efficiently in through-hole and blind-hole applications\u003c\/li\u003e\n\u003cli\u003eHeavy duty grade with NAS specification designation for consistent dimensional tolerance\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard chucks without bushings or adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard jobber-length drill bit fitting any drill press, hand drill, or machining center chuck rated for a 0.3680-inch straight shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the shank fully in the chuck before operation and verify runout before drilling production holes. Power down and lock out the drill press or machine spindle before changing bits. Use appropriate cutting fluid for ferrous metals to extend tool life and maintain hole quality. Inspect the split point for chipping or wear before reuse; a damaged point will cause oversized or off-center holes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: U\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3680 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3-5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3680 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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral (Regular)\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\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\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: 0.63 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: 84580687\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51739086029106,"sku":"84580687","price":19.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6f4915f4b5d03188ac66b6337b7e72da.jpg?v=1788809169","url":"https:\/\/voomisupply.com\/products\/hertel-84580687-jobber-drill-bit-letter-u-0-3680-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}