{"product_id":"hertel-77428811-reduced-shank-drill-bit-55-64-in-hss","title":"Hertel 77428811 Reduced Shank Drill Bit 55\/64 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 77428811 is a reduced shank twist drill bit designed for drilling into low and medium tensile strength materials in production and maintenance environments. Built from high-speed steel with an oxide finish, it measures 55\/64 inch (0.8594 inch decimal) in drill diameter with a 1\/2 inch Weldon flat shank. The overall length is 6 inches with a 3 inch flute length and a standard 118 degree point angle. The Weldon shank with three flats prevents slipping in compatible chucks and holders, making it a reliable choice for high-torque drilling applications. Right-hand spiral flutes clear chips efficiently during through-hole and blind-hole operations.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for use in drill presses, milling machines, and hand-held power tools equipped with a 1\/2 inch Weldon-style holder. Typical applications include fabrication shops, maintenance facilities, and industrial production lines working with mild steel, aluminum, and similar low to medium tensile strength workpiece materials. The reduced shank design allows a larger diameter bit to be used in standard 1\/2 inch capacity chucks without requiring a larger spindle or collet system.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e55\/64 inch (0.8594 inch decimal) drill diameter for precise hole sizing\u003c\/li\u003e\n\u003cli\u003e1\/2 inch Weldon flat shank with three flats prevents rotation under load\u003c\/li\u003e\n\u003cli\u003e118 degree standard point angle for general-purpose drilling\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction handles demanding production environments\u003c\/li\u003e\n\u003cli\u003eOxide finish provides mild lubricity and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eRight-hand, regular spiral flutes promote efficient chip evacuation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with 1\/2 inch Weldon-style drill chucks and tool holders commonly found on drill presses and milling machines. Compatible with low and medium tensile strength workpiece materials per manufacturer specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists and maintenance technicians using a 1\/2 inch Weldon chuck or end mill holder. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit. Verify all set screws on the Weldon holder are properly tightened against the flats before operation. Inspect the cutting edges for wear or damage before each use and replace if chipping or dullness is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 55\/64 inch (0.8594 inch decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Weldon Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flats\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\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\u003eTool 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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Low and Medium Tensile Strength Materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.54 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241635\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: 77428811\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51740188442930,"sku":"77428811","price":61.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/59d4568ec27debdbfb944dd797ec25c0.jpg?v=1788823335","url":"https:\/\/voomisupply.com\/products\/hertel-77428811-reduced-shank-drill-bit-55-64-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}