{"product_id":"accupro-12178958-square-end-mill-1-32-in-4-flute-carbide","title":"Accupro 12178958 Square End Mill 1\/32 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12178958 is a 4-flute solid carbide square end mill designed for high-precision milling in tight-tolerance applications. Built from micrograin carbide stock, it carries an nACRo coating that reduces heat buildup and extends tool life in ferrous and non-ferrous materials alike. The 1\/32-inch cutting diameter and 3\/32-inch length of cut make it well-suited for fine-detail slot milling, profiling, and pocket work where a larger tool simply will not fit. A 30-degree helix angle promotes efficient chip evacuation while maintaining a clean cut wall. This tool is used by machinists and toolroom operators working on CNC machining centers and manual mills where micro-diameter work is required.\u003c\/p\u003e\u003cp\u003eThis end mill is appropriate for production and job-shop environments where small-feature geometry is common, including mold work, die making, medical component machining, and aerospace detail parts. The 1\/8-inch shank diameter fits standard collet chucks and ER-series collets found on most vertical machining centers. The 1-1\/2-inch overall length keeps tool stick-out manageable, which is critical at this cutting diameter to minimize deflection and avoid breakage. Right-hand cut and right-hand flute configuration follows standard convention for conventional and climb milling on CNC equipment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/32-inch (0.0312-inch) cutting diameter with a mill diameter tolerance of +0.000 \/ -0.002 inches\u003c\/li\u003e\n\u003cli\u003enACRo coating for improved wear resistance and reduced friction in demanding materials\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide construction for rigidity at micro diameters\u003c\/li\u003e\n\u003cli\u003e30-degree spiral flute helix for efficient chip evacuation and smooth surface finish\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows plunge entry without a pre-drilled pilot hole\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute — compatible with standard CNC spindle rotation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard-production micro end mill fitting any 1\/8-inch collet or end mill holder on vertical machining centers, CNC routers, and manual knee mills equipped for small-diameter tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is in an e-stop or powered-down state before changing tooling. Seat the 1\/8-inch shank fully into the collet and torque the collet nut to the collet manufacturer specification — do not rely on feel alone at this shank diameter. At 1\/32-inch cutting diameter, even minor runout in the holder will cause premature breakage; verify TIR with an indicator before production use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1\/32 inch (0.0312 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.002 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/32 inch (0.0938 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/8 inch (0.125 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0004 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-1\/2 inches (1.5 inches)\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\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: Yes\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: nACRo\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\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 12178958\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730167922994,"sku":"12178958","price":34.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bf1fd9c1b5e97321a88eeb01463e1bef.jpg?v=1788712874","url":"https:\/\/voomisupply.com\/products\/accupro-12178958-square-end-mill-1-32-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}