{"product_id":"robbjack-str-404-09-a-square-end-mill-9-32-in-4-flute-carbide","title":"Robbjack STR-404-09-A Square End Mill 9\/32 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ROBBJACK STR-404-09-A is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous metal applications. It features a 9\/32-inch cutting diameter, a 3\/4-inch length of cut, and a 5\/16-inch shank diameter, with an overall length of 2-1\/2 inches. The four-flute, fine-pitch geometry paired with an AlTiN coating provides heat resistance and extended tool life in high-speed cutting operations. The 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. This tool is installed and used by machinists and CNC operators in production and job-shop environments.\u003c\/p\u003e\u003cp\u003eThe STR-404-09-A is suited for slotting, peripheral milling, and profiling operations in materials where heat generation at the cutting edge is a concern. Its centercutting capability allows it to plunge directly into the workpiece. The regular-length geometry fits standard toolholders and is well-matched to vertical machining centers and manual mills requiring a compact, rigid end mill in the 9\/32-inch diameter range.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e9\/32-inch cutting diameter with 3\/4-inch length of cut for controlled depth engagement\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for rigidity and dimensional stability under load\u003c\/li\u003e\n\u003cli\u003eAlTiN finish increases surface hardness and thermal resistance at the cutting edge\u003c\/li\u003e\n\u003cli\u003e4-flute, fine-pitch design improves surface finish and feed rate capability\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle promotes efficient chip flow and reduces cutting forces\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry without pre-drilling\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute configuration for standard spindle rotation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard production end mill within the ROBBJACK STR-404 series, compatible with 5\/16-inch collets, end mill holders, and toolholders accepting a 5\/16-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator following the machine tool builder guidelines for toolholder tightening and runout verification. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Confirm collet or toolholder condition before seating the shank to avoid runout that can reduce tool life. Follow the cutting tool manufacturer recommended speeds and feeds for the workpiece material and do not exceed the rated depth of cut for this tool diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 9\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut (LOC)\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2-1\/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\u003eFlute Pitch\u003c\/strong\u003e: Fine\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\u003eEnd Type\u003c\/strong\u003e: Square, Centercutting, Single End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.125 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-404-09-A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":51971940909362,"sku":"STR-404-09-A","price":147.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/74c03de09f766252fa770682ce9c22b0_4b925bde-093e-44ce-bb84-35208639d55f.jpg?v=1789959285","url":"https:\/\/voomisupply.com\/products\/robbjack-str-404-09-a-square-end-mill-9-32-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}