{"product_id":"robbjack-ss-4-040-square-end-mill-0-04-in-4-flute-carbide","title":"Robbjack SS-4-040 Square End Mill 0.04 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ROBBJACK SS-4-040 is a solid carbide square end mill designed for precision milling in tight geometries. It carries a 0.04 inch cutting diameter, a 0.0625 inch length of cut, and a 1\/8 inch straight cylindrical shank, giving it a compact, stub-length profile suited for close-tolerance work. The four-flute spiral configuration with a 30-degree helix angle promotes efficient chip evacuation and smooth surface finish. This tool is uncoated and built from ROBBJACK Tuffy-grade solid carbide, which delivers the rigidity and edge retention needed in demanding machining environments. Machinists and tool-and-die professionals are the primary users of this end mill.\u003c\/p\u003e\n\u003cp\u003eThe SS-4-040 is well suited for slotting, profiling, and light plunge operations in ferrous and non-ferrous materials where a small-diameter tool is required. Its centercutting geometry allows direct plunge entry without a pre-drilled pilot hole. The stub length design minimizes deflection, making it a practical choice for finish passes, micro-milling operations, and work in confined part features on CNC machining centers and manual mills. The right-hand cut and right-hand flute orientation are standard for conventional CNC spindle setups.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.04 inch cutting diameter with a tolerance of plus 0.0005 inch \/ minus 0.0005 inch for consistent sizing\u003c\/li\u003e\n  \u003cli\u003eSolid Tuffy-grade carbide construction for rigidity and edge retention\u003c\/li\u003e\n  \u003cli\u003eFour spiral flutes with a 30-degree helix angle for efficient chip flow and smooth finish\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows direct plunge entry\u003c\/li\u003e\n  \u003cli\u003eStub length (0.0625 inch LOC, 1.5 inch OAL) minimizes deflection in tight features\u003c\/li\u003e\n  \u003cli\u003eUncoated, right-hand cut, right-hand flute  -  standard orientation for CNC setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard straight-shank end mill compatible with 1\/8 inch collets and end mill holders on CNC machining centers and manual vertical mills running right-hand rotation spindles.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or toolroom personnel. Secure the 1\/8 inch shank in a clean, undamaged collet or end mill holder and torque to the machine tool manufacturer's specification. Inspect the cutting edges for chips or damage before mounting. Verify spindle speed and feed rate against the material being cut before engaging the workpiece, and never exceed the tool's rated depth of cut for the given diameter.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.04 inches (tolerance: plus 0.0005 \/ minus 0.0005 inches)\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: 0.0625 inches (1\/16 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 inch, tolerance: minus 0.0001 \/ minus 0.0002 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5 inches (tolerance: plus 0.060 \/ minus 0.060 inches)\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: Tuffy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 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\u003eLength Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: SS-4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0625 pounds\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: ROBBJACK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SS-4-040\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":51967453430066,"sku":"SS-4-040","price":46.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0e39b5125b2672c324b7d0d2d829dcc8.jpg?v=1789951008","url":"https:\/\/voomisupply.com\/products\/robbjack-ss-4-040-square-end-mill-0-04-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}