{"product_id":"hertel-e899921316-square-end-mill-0-125-in-4-flute-hss-tin","title":"Hertel E899921316 Square End Mill 0.125 in 4 Flute Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL E899921316 is a double-end square end mill manufactured from high speed steel (HSS) with a titanium nitride (TiN) finish. It features a 0.125-inch cutting diameter, a 0.1875-inch length of cut, and a 3\/8-inch shank diameter with a 2.75-inch overall length. The four-flute, spiral-flute geometry runs a 30-degree helix angle with right-hand cut and right-hand flute orientation. This tool is used in milling operations on manual mills, CNC machining centers, and knee mills by machinists and tool-and-die professionals working in precision metal removal applications.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for light to moderate slotting, profiling, and peripheral milling in ferrous and non-ferrous materials where a small-diameter, double-end tool is practical. The double-end design provides two usable cutting ends, extending tool life between changes. The TiN coating adds surface hardness and reduces friction at the cutting edge. It is a common selection for job shop environments, maintenance machining, and prototype work where HSS tooling is preferred over carbide for interrupted cuts or flexible setups.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-end design provides two cutting ends per tool\u003c\/li\u003e\n  \u003cli\u003eTiN finish increases surface hardness and reduces tool wear\u003c\/li\u003e\n  \u003cli\u003e30-degree helix angle promotes smooth chip evacuation during milling\u003c\/li\u003e\n  \u003cli\u003eFour spiral flutes for balanced cutting action and improved finish\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand flute orientation for standard spindle use\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction suitable for interrupted cuts and flexible setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard-fit tooling for milling machines accepting a 3\/8-inch straight shank, including manual knee mills and CNC machining centers with standard collet or end mill holder systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist with the spindle fully powered down and locked out before tool changes. Secure the shank in a clean, properly sized collet or end mill holder to the full recommended engagement depth. Inspect the cutting edges and TiN coating for chips or wear before each use. Follow shop safety practices and applicable machine guarding requirements during all milling operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\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: 0.1875 inches (3\/16 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.75 inches (2-3\/4 inch)\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\u003eFinish\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\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\u003eEnd Type\u003c\/strong\u003e: Double End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: E899921316\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728895705394,"sku":"E899921316","price":37.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5cde1e2fa53adca43a40def0f49b9c5a.jpg?v=1788697473","url":"https:\/\/voomisupply.com\/products\/hertel-e899921316-square-end-mill-0-125-in-4-flute-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}