{"product_id":"seco-17011878-square-end-mill-1-1-4-in-6-flutes-cobalt","title":"Seco 17011878 Square End Mill 1-1\/4 in 6 Flutes Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SECO 17011878 is a single-end, 6-flute cobalt square end mill built for demanding metal removal in production and job-shop environments. The cutter measures 1.25 inches in diameter with a 4-inch length of cut, a 1.25-inch shank diameter, and a 6.5-inch overall length. Manufactured from M42 cobalt high-speed steel with a bright uncoated finish, it delivers good heat resistance and edge toughness without the added cost of a PVD coating. The 30-degree right-hand spiral flute geometry promotes smooth chip evacuation and stable cutting action across a range of workpiece materials. This tool is installed by machinists and CNC operators on vertical and horizontal milling machines.\u003c\/p\u003e\n\u003cp\u003eThe 17011878 is rated for use on steel, stainless steel, cast iron, aluminum and non-ferrous materials, and high-temperature alloys, corresponding to ISO material groups P, M, K, N, and S. The centercutting design allows the tool to plunge directly into the workpiece, giving operators flexibility for slot milling, peripheral milling, and ramping operations. The right-hand flute and right-hand cut configuration suits standard spindle rotation on most milling centers. The Series SPC408 designation places this tool within a family of general-purpose cobalt end mills intended for shops that require reliable performance across mixed-material work without switching to carbide tooling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt HSS construction for elevated heat and wear resistance compared to standard M2 HSS\u003c\/li\u003e\n  \u003cli\u003e6-flute geometry increases feed rate capability and improves surface finish on finishing passes\u003c\/li\u003e\n  \u003cli\u003e30-degree helix angle balances chip evacuation with radial cutting forces on ferrous materials\u003c\/li\u003e\n  \u003cli\u003eCentercutting design supports plunge entry without a pre-drilled pilot hole\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish maintains consistent dimensions and suits re-sharpening without coating concerns\u003c\/li\u003e\n  \u003cli\u003eSingle-end construction with 1.25-inch straight shank for direct ER or Weldon-style holder mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit replacement or specification purchase for milling operations requiring a 1.25-inch diameter, 6-flute cobalt square end mill in the SECO SPC408 series. Compatible with standard 1.25-inch collet chucks, ER collet holders, and Weldon-style end mill holders on vertical and horizontal milling centers.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC setup technician. Secure the shank fully within the holder to the recommended gauge-line depth and torque set screws per holder manufacturer specifications before spindle engagement. Verify runout against the published TIR maximum of 0.001 inches using a dial indicator before initiating the cut. Always power down and lock out the spindle before changing tooling, and confirm workpiece clamping is secure prior to operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt (M42 HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6.5 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\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: Bright \/ Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.0010 \/ -0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: +0.0620 \/ 0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTIR Maximum\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: SPC408\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: SECO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 17011878\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51560076837170,"sku":"17011878","price":272.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/45e003f1f7c442eaf4a97369cd791473_8810bcdf-68f6-4490-bbd9-339eba09fd28.jpg?v=1786446105","url":"https:\/\/voomisupply.com\/products\/seco-17011878-square-end-mill-1-1-4-in-6-flutes-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}