{"product_id":"osg-5435100-square-end-mill-1-in-4-flute-cobalt-double-end","title":"Osg 5435100 Square End Mill 1 in 4 Flute Cobalt Double End","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 5435100 is a double-end cobalt square end mill designed for milling operations in ferrous and high-temperature alloy materials. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention under demanding cutting conditions. The tool features a 1-inch mill diameter, a 1-7\/8-inch length of cut, and a 4-flute spiral configuration with a 30-degree helix angle for efficient chip evacuation and surface finish quality. At 6-3\/8 inches overall length with a 1-inch shank diameter, it fits standard milling machine and machining center collet and endmill holder setups. The bright, uncoated finish suits applications where coating interaction with workpiece material is a concern.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for use in vertical and horizontal milling machines and CNC machining centers performing slotting, profiling, and peripheral milling operations. The double-end design provides two usable cutting ends, reducing tooling cost per edge. The center-cutting geometry allows plunge entry into the workpiece. Right-hand cutting and right-hand flute direction conform to conventional milling machine setups. It is a regular-length tool in the OSG Series 543 line, appropriate for general-purpose shop and production environments where cobalt tooling is specified.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt high-speed steel construction for heat and wear resistance\u003c\/li\u003e\n\u003cli\u003eDouble-end design with two usable cutting edges per tool\u003c\/li\u003e\n\u003cli\u003e4 spiral flutes with 30-degree helix angle for efficient chip removal\u003c\/li\u003e\n\u003cli\u003eCenter-cutting capability allows direct plunge entry\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — no coating interaction with workpiece\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute direction for standard milling setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard milling machines and CNC machining centers accepting a 1-inch shank diameter end mill holder or collet chuck. Part of the OSG Series 543 cobalt end mill line.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out. Ensure the collet or end mill holder is clean and free of debris before seating the shank. Verify runout with an indicator after clamping before beginning the cut. Follow the machine manufacturer torque specifications for drawbar or collet nut tightening.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-7\/8 inches (1.875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6-3\/8 inches (6.375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\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\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003eCenter Cutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble End\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 543\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5435100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727340503346,"sku":"5435100","price":306.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a09e6a93d813ea45011445dc99f41e2b.jpg?v=1788676506","url":"https:\/\/voomisupply.com\/products\/osg-5435100-square-end-mill-1-in-4-flute-cobalt-double-end","provider":"Voomi Supply","version":"1.0","type":"link"}