{"product_id":"robbjack-str-404-20-t-square-end-mill-5-8-inch-4-flute","title":"Robbjack STR-404-20-T Square End Mill 5\/8 Inch 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ROBBJACK STR-404-20-T is a solid carbide square end mill designed for precision material removal in ferrous and non-ferrous machining applications. Part of the STR-404 series, this centercutting tool features a 5\/8-inch cutting diameter, a 1-1\/4-inch length of cut, and a 4-flute configuration with a fine pitch and 30-degree helix angle. The TiN (titanium nitride) finish improves surface hardness and extends tool life in production environments. The 5\/8-inch shank provides solid grip in standard collet and end mill holders. Machinists and CNC operators install and run this tool in vertical mills, machining centers, and manual knee mills.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for slotting, profiling, and peripheral milling operations in regular-reach setups. The regular length profile and 3-1\/2-inch overall length make it a practical choice for general-purpose work where extended reach is not required. The right-hand cut and right-hand flute geometry are standard for conventional and climb milling on most machine tool spindles. It is appropriate for use in job shops, production floors, and tool rooms handling a range of materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003eTiN finish for improved hardness and extended tool life\u003c\/li\u003e\n\u003cli\u003e4-flute fine-pitch design for smooth finish cuts\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows plunge entry into the workpiece\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute  -  compatible with standard spindle direction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard-shank square end mill for use in 5\/8-inch collets, end mill holders, and hydraulic or shrink-fit tooling systems compatible with a 5\/8-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following the machine tool manufacturer's guidelines. Ensure the spindle is fully stopped and locked out before changing tooling. Seat the shank fully in the holder and torque the retention screw or collet nut to the holder manufacturer's specification. Inspect the cutting edges for chipping before each use and confirm runout is within acceptable limits for the intended operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut (LOC)\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 3-1\/2 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\u003ePitch\u003c\/strong\u003e: Fine\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\u003eEnd Type\u003c\/strong\u003e: Square, Single End, Centercutting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: STR-404\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: STR-404-20-T\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":51964164702514,"sku":"STR-404-20-T","price":522.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/74c03de09f766252fa770682ce9c22b0_4a386d5e-9431-4756-bbb0-be121fe5a1df.jpg?v=1789948872","url":"https:\/\/voomisupply.com\/products\/robbjack-str-404-20-t-square-end-mill-5-8-inch-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}