{"product_id":"osg-5575100-square-end-mill-1-in-4-flute-cobalt-extra-long","title":"Osg 5575100 Square End Mill 1 in 4 Flute Cobalt Extra Long","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 5575100 is a 4-flute cobalt square end mill built for material removal in demanding machining applications. With a 1-inch mill diameter, 6-inch length of cut, and 8.5-inch overall length, this extra-long tool handles deep-pocket and long-reach cuts where standard-length end mills cannot reach. The solid cobalt M42 construction resists heat and wear in tough ferrous and stainless materials. The 30-degree right-hand spiral flute geometry promotes smooth chip evacuation and stable cutting action. This is a single-end, uncoated tool without a chipbreaker, suited for shops running conventional milling programs where coating is applied in-house or not required.\u003c\/p\u003e\u003cp\u003eThis end mill is designed for use in vertical and horizontal CNC machining centers, knee mills, and manual milling machines where extended reach is required. Typical applications include deep-cavity milling, slotting, and side milling in steel, stainless steel, cast iron, and high-temperature alloys. The extra-long configuration makes it well-suited for mold and die work, aerospace components, and fabrication jobs requiring cuts beyond standard reach. It is non-centercutting, so it is not intended for plunge entry without a pre-drilled or pre-bored starting hole.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-inch mill diameter with matched 1-inch shank diameter for rigid tool holding\u003c\/li\u003e\n\u003cli\u003e6-inch length of cut for deep-pocket and extended-reach milling\u003c\/li\u003e\n\u003cli\u003eM42 cobalt steel construction for heat and wear resistance in tough materials\u003c\/li\u003e\n\u003cli\u003e30-degree right-hand spiral flute for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute configuration compatible with standard spindle rotation\u003c\/li\u003e\n\u003cli\u003eNon-centercutting design — requires pre-drilled entry for plunge operations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use cutting tool for milling operations requiring a 1-inch shank, 4-flute cobalt square end mill with extra-long reach, in the OSG Series 557 product line.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Secure the shank in a collet chuck, end mill holder, or Weldon-style holder rated for the shank diameter before mounting in the spindle. Verify runout with a dial indicator after tool mounting to minimize premature edge wear. Power down and lock out the machine before changing tooling in accordance with applicable machine safety procedures.\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\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 8.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt (M42)\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: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Extra Long\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 557\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: 5575100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730381603122,"sku":"5575100","price":241.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0505dddf3b64ddccb9390e5548e8ec60.jpg?v=1788716446","url":"https:\/\/voomisupply.com\/products\/osg-5575100-square-end-mill-1-in-4-flute-cobalt-extra-long","provider":"Voomi Supply","version":"1.0","type":"link"}