{"product_id":"hertel-e199921325-square-end-mill-7-16-in-4-flute-hss","title":"Hertel E199921325 Square End Mill 7\/16 in 4 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL E199921325 is a double-end, four-flute square end mill designed for general-purpose milling in ferrous and non-ferrous materials. Built from high speed steel (HSS) with a bright, uncoated finish, it delivers reliable performance in drilling, slotting, and peripheral milling operations. The cutting diameter measures 7\/16 inches with a 1-inch length of cut, mounted on a 1\/2-inch shank. A 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. The tool is centercutting, allowing plunge cuts without a pre-drilled pilot hole. Machinists and toolroom operators rely on this geometry for versatile, everyday material removal tasks.\u003c\/p\u003e\u003cp\u003eThis end mill suits standard vertical and horizontal milling machine setups found in job shops, maintenance environments, and production toolrooms. The double-end configuration provides two usable cutting ends, extending tool life between changes. Right-hand cut and right-hand spiral flute direction are standard for conventional CNC and manual mill spindles. The 4-1\/2-inch overall length provides adequate reach for most common workpiece setups without sacrificing rigidity.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble-end design with two usable cutting ends for extended service life\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry into workpiece material\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle promotes efficient chip flow and reduced cutting forces\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction provides toughness across a broad range of materials\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish maintains sharp edge geometry without coating buildup\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand spiral flute compatible with standard mill spindle rotation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit tooling option for standard 1\/2-inch collets and end mill holders used on vertical knee mills, CNC machining centers, and manual milling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following shop safety procedures. Always power down and lock out the spindle before changing tooling. Secure the shank fully in a matched collet or end mill holder to the recommended engagement depth before tightening. Verify spindle rotation direction matches the right-hand cut specification of this tool before initiating a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 7\/16 inches (0.4375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inch (0.5 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-1\/2 inches (4.5 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Double End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: E199921325\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51731939098930,"sku":"E199921325","price":66.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b348e6cb6de9e4107d7722a0936ff4e6_495386bd-f638-4072-8ab2-39d238ed9da3.jpg?v=1788736939","url":"https:\/\/voomisupply.com\/products\/hertel-e199921325-square-end-mill-7-16-in-4-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}