{"product_id":"accupro-12181791-square-end-mill-3-8-inch-2-flute-carbide","title":"Accupro 12181791 Square End Mill 3\/8 Inch 2 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12181791 is a solid carbide, square-end, single-end mill designed for precision milling operations in metalworking and machining applications. Built from micrograin carbide, it offers a 0.375-inch cutting diameter and a 1.375-inch length of cut, with a 40-degree helix angle that promotes efficient chip evacuation and smooth cutting action. The spiral flute geometry and centercutting capability allow this tool to plunge directly into workpiece material as well as perform standard peripheral milling. Machinists and tool-and-die professionals install this end mill in CNC machining centers, manual knee mills, and similar machine tool setups where tight tolerances and consistent performance are required.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for general-purpose milling of ferrous and non-ferrous materials where an uncoated, micrograin carbide substrate is appropriate. The extra-long length type, with a 3-inch overall length against a 0.375-inch shank diameter, provides extended reach into deeper pockets, slots, and cavities that standard-length tooling cannot access. Right-hand cut and right-hand flute orientation match the standard spindle rotation of most vertical machining centers and milling machines. The uncoated finish makes it straightforward to inspect cutting edge condition during use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.375-inch cutting diameter with mill diameter tolerance of +0.000 \/ -0.002 inches for accurate sizing\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide construction for hardness and edge retention\u003c\/li\u003e\n\u003cli\u003e40-degree helix angle promotes efficient chip evacuation in deeper cuts\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry into workpiece material\u003c\/li\u003e\n\u003cli\u003eExtra-long classification: 3-inch overall length with 1.375-inch length of cut\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand spiral flute — fits standard CNC and manual mill spindles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard shank end mill for use in any milling machine or machining center that accepts a 0.375-inch straight shank via collet, end mill holder, or equivalent toolholding system.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed with the machine spindle fully stopped and the machine locked out per applicable shop safety procedures. Secure the shank to the published shank diameter tolerance using a properly sized collet or end mill holder; avoid over-tightening set-screw holders against the shank to prevent damage to the tolerance surface. Verify runout with a dial indicator before first use when tight dimensional tolerances are required. A licensed machinist or qualified toolroom technician should set speeds and feeds appropriate to the workpiece material and machine rigidity.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.375 inches (1-3\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Micrograin Grade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\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\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\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.002 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\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\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: 12181791\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730982699314,"sku":"12181791","price":57.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5afce8593d21e2536ca988bf8ccf0a01.jpg?v=1788725537","url":"https:\/\/voomisupply.com\/products\/accupro-12181791-square-end-mill-3-8-inch-2-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}