{"product_id":"harvey-tool-891608-square-end-mill-1-8-in-4-flute-carbide","title":"Harvey Tool 891608 Square End Mill 1\/8 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HARVEY TOOL 891608 is a solid carbide square end mill designed for precision milling in abrasive and hard materials where standard coated tooling falls short. It carries a CVD diamond coating, which delivers exceptional hardness and wear resistance compared to PVD alternatives. The cutting diameter is 0.125 inches (1\/8 inch), the length of cut is 1 inch, and the overall length is 2.5 inches. With four flutes and a 30-degree helix angle, this tool is suited for finish milling passes that demand tight tolerances and a consistent surface finish. Machinists and CNC operators in production shops are the primary users of this tool.\u003c\/p\u003e\u003cp\u003eThis end mill is used in CNC machining centers for cutting graphite, carbon fiber, fiberglass, ceramics, green carbide, and other highly abrasive non-metallic materials. The CVD diamond coating is specifically chosen for these applications because it resists the rapid edge wear that abrasive composites cause on uncoated or TiN-coated carbide. The single-end, right-hand cut configuration and right-hand flute direction make it compatible with standard spindle setups found in vertical and horizontal machining centers. It is not centercutting, so plunge milling is not the intended entry strategy for this tool.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD diamond coating for maximum wear resistance in abrasive materials\u003c\/li\u003e\n\u003cli\u003eSolid carbide substrate for rigidity and dimensional accuracy\u003c\/li\u003e\n\u003cli\u003eFour flutes with 30-degree helix angle for efficient chip evacuation and surface finish\u003c\/li\u003e\n\u003cli\u003e0.125-inch cutting diameter and 1-inch length of cut for precise, controlled passes\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute direction for standard CNC spindle compatibility\u003c\/li\u003e\n\u003cli\u003eSingle-end design; not centercutting — best suited for peripheral and slot milling, not plunge entry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers with standard 1\/8-inch collet or end mill holder setups. Best suited for machining graphite, carbon fiber, fiberglass, ceramics, and other abrasive non-metallic workpiece materials where CVD diamond coating provides a meaningful service life advantage.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or CNC setup technician. Secure the 0.125-inch shank in a precision collet or shrink-fit holder rated for the shank diameter to minimize runout. Ensure the machine spindle is fully stopped and locked out before installing or removing the tool. Because this tool is not centercutting, program ramp or helical entry moves rather than direct plunge entries to avoid tool damage at the tip.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: CVD Diamond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\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\u003eVariable Helix\u003c\/strong\u003e: No\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: 3.03 inches L x 0.32 inches W x 0.32 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HARVEY TOOL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 891608\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51732050346290,"sku":"891608","price":186.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c8ec0c7d1b391b5008bbc46e0347b545_8ee3501f-645c-4424-b662-7651ad8f7da0.jpg?v=1788738668","url":"https:\/\/voomisupply.com\/products\/harvey-tool-891608-square-end-mill-1-8-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}