{"product_id":"value-collection-204-4016-er40-collet-0-25-in","title":"Value Collection 204-4016 ER40 Collet 0.25 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 204-4016 is an ER40 series collet designed for use in CNC machining centers, milling machines, and toolholding systems that accept ER40 collet chucks. With a collet size of 0.25 inches (1\/4 inch) and a total indicator runout (TIR) of 0.0005 inches, this collet provides the precision grip required for accurate material removal and consistent tool concentricity. Machinists and tool room technicians rely on ER-style collets to secure cutting tools, drills, and end mills during high-speed machining operations. The ER40 designation refers to the collet series, which determines chuck compatibility and clamping range.\u003c\/p\u003e\n\u003cp\u003eThis collet is suited for use in production and job-shop environments where repeatable tool holding is required. It fits any standard ER40 collet chuck and is appropriate for securing 0.25-inch shank tooling including end mills, drills, reamers, and taps. The unit is sold individually and is a practical replacement or supplemental collet for shops running multiple setups simultaneously.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eER40 collet series for compatibility with standard ER40 chucks\u003c\/li\u003e\n  \u003cli\u003e0.25 inch (1\/4 inch) collet size for secure grip on matching shank tooling\u003c\/li\u003e\n  \u003cli\u003e0.0005 inch TIR for precise tool concentricity and reduced runout\u003c\/li\u003e\n  \u003cli\u003eSold as a single unit — easy to stock as a replacement or spare\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.66 pounds for easy handling and quick changeout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in ER40 collet chucks used on CNC milling machines, machining centers, and manual mills that accept the ER40 collet series. Compatible with 0.25-inch shank tooling.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or tool room technicians. Before changing or seating the collet, ensure the spindle is fully stopped and the machine is powered down or in a safe lockout state. Insert the collet into the ER40 chuck by snapping it into the collet nut before threading the nut onto the chuck body — never tighten the nut without the collet and tool seated properly. Use a calibrated torque wrench and the chuck manufacturer's specified procedure to achieve proper clamping force without damaging the collet.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Series\u003c\/strong\u003e: ER40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Size (Decimal Inch)\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Size (Fractional)\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTIR\u003c\/strong\u003e: 0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.66 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 204-4016\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51692840911154,"sku":"204-4016","price":27.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8a625bdaadb8d0abe03dad0c6de04e6e.jpg?v=1788303847","url":"https:\/\/voomisupply.com\/products\/value-collection-204-4016-er40-collet-0-25-in","provider":"Voomi Supply","version":"1.0","type":"link"}