{"product_id":"osg-8556580-square-end-mill-4mm-5-flute-solid-carbide","title":"Osg 8556580 Square End Mill 4mm 5 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 8556580 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. With a 4 mm cutting diameter and a 6 mm length of cut, this five-flute end mill delivers efficient material removal and excellent surface finish in a compact form factor. The Duarise coating provides enhanced wear resistance and thermal protection, extending tool life in demanding cutting conditions. The variable helix geometry reduces harmonic vibration and chatter, improving cut quality and dimensional accuracy. This tool is intended for use by machinists and CNC operators working in job shop, production, and toolroom environments.\u003c\/p\u003e\u003cp\u003eThe OSG 8556580 is suited for milling ferrous and non-ferrous materials where tight tolerances and fine finishes are required. The 6 mm shank diameter fits standard ER collet chucks and milling tool holders common to CNC machining centers and manual mills. The right-hand cutting and right-hand flute direction are consistent with conventional milling machine spindle configurations. Centercutting capability allows for plunge milling in addition to peripheral and slot milling operations. The single-end design and 45 mm overall length keep the tool compact and rigid for short-reach applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4 mm cutting diameter with 6 mm length of cut for precise, controlled material removal\u003c\/li\u003e\n\u003cli\u003eFive-flute design increases feed rates and improves surface finish compared to standard four-flute tools\u003c\/li\u003e\n\u003cli\u003eDuarise coating provides wear resistance and heat reduction during high-speed machining\u003c\/li\u003e\n\u003cli\u003eVariable helix geometry reduces chatter and harmonic vibration for improved cut stability\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide construction delivers rigidity and edge retention\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry supports plunge entry without pre-drilling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers and manual milling machines equipped with ER collet chucks or tool holders accepting a 6 mm shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from the holder. Seat the shank to the minimum recommended engagement depth in the collet or tool holder and torque the collet nut according to the tool holder manufacturer specifications. Verify runout with a dial indicator before beginning production cuts.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 4 mm (0.1575 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 6 mm (0.2362 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 45 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6 mm (0.2362 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Duarise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\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\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 6.25 x 1.15 x 1.05 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.39 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 8556580\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51745977729330,"sku":"8556580","price":58.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/94c11c86013c51ec06a2c72a627d80d2.jpg?v=1788866266","url":"https:\/\/voomisupply.com\/products\/osg-8556580-square-end-mill-4mm-5-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}