{"product_id":"value-collection-230-4431-5c-expanding-collet-steel","title":"Value Collection 230-4431 5C Expanding Collet Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 230-4431 is a 5C expanding collet machined from steel for use in lathes, collet chucks, and other 5C-compatible workholding fixtures. Unlike standard closing collets, this expanding type grips the internal bore of a workpiece, making it the correct choice when the part must be held from the inside out. It features a head diameter of 2.5 inches, a head length of 1 inch, and a concentricity rating of 0.0020 inches TIR, providing the repeatable runout control that precision turning and grinding operations demand. Installation is handled by machinists and toolroom technicians working with 5C-standard spindle equipment.\u003c\/p\u003e\n\u003cp\u003eThis collet is suited for production and job-shop environments where inside-diameter workholding is required on 5C-equipped lathes, indexers, and collet fixtures. It accommodates a minimum grip of 0.75 inches and a maximum grip of 2.4375 inches, covering a wide range of bore diameters in a single tool. The internal thread is 1.041 inches-24 and the external thread is 1.242 inches-20, matching standard 5C closer and chuck configurations. Steel construction handles the clamping loads typical of turning, milling, and grinding applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eExpanding collet design grips workpieces from the inside diameter\u003c\/li\u003e\n  \u003cli\u003e0.0020 inches TIR concentricity for repeatable, low-runout workholding\u003c\/li\u003e\n  \u003cli\u003eGrip range from 0.75 inches to 2.4375 inches covers a broad workpiece bore span\u003c\/li\u003e\n  \u003cli\u003eHead diameter of 2.5 inches and head length of 1 inch in standard 5C form factor\u003c\/li\u003e\n  \u003cli\u003eInternal thread 1.041 inches-24 and external thread 1.242 inches-20 for 5C compatibility\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability under production clamping loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard fit for 5C collet-compatible lathes, collet chucks, indexers, and rotary fixtures that accept the 5C collet standard.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or toolroom personnel. Power down and lock out the spindle drive before inserting or removing any collet. Ensure the collet bore, closer threads, and spindle nose are clean and free of chips before seating the collet. Do not exceed the collet grip range, as overloading an expanding collet can cause permanent distortion and loss of concentricity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Type\u003c\/strong\u003e: Expanding\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConcentricity (TIR)\u003c\/strong\u003e: 0.0020 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Thread Size\u003c\/strong\u003e: 1.041 inches-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Thread Size\u003c\/strong\u003e: 1.242 inches-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Grip\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Grip\u003c\/strong\u003e: 2.4375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112800\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: 230-4431\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51697168875826,"sku":"230-4431","price":144.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a64bb6271ccec7b5d6b9b7c616ccd848.jpg?v=1788350188","url":"https:\/\/voomisupply.com\/products\/value-collection-230-4431-5c-expanding-collet-steel","provider":"Voomi Supply","version":"1.0","type":"link"}