{"product_id":"value-collection-230-4448-5c-expanding-collet-steel","title":"Value Collection 230-4448 5C Expanding Collet Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 230-4448 is a 5C expanding collet machined from steel, designed for use in lathes, collet chucks, and indexing fixtures that accept the 5C collet standard. Expanding collets grip workpieces from the inside bore rather than the outside diameter, making them the correct choice when a part must be held by an internal surface for secondary operations. The collet has a head diameter of 4 inches and a head length of 2.5 inches, with a concentricity (TIR) rating of 0.0020 inches. Internal and external threads are precision-cut to maintain repeatable runout across setups.\u003c\/p\u003e\u003cp\u003eThis expanding collet is suited for machine shops, tool rooms, and production environments where workholding from an internal bore is required. Typical applications include holding rings, bushings, sleeves, and other hollow or bored workpieces for turning, grinding, or inspection operations. The steel construction provides the rigidity and wear resistance expected in production machining environments. A licensed machinist or toolroom technician is the typical end user.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eExpanding collet design grips internal bores for secondary-operation workholding\u003c\/li\u003e\n\u003cli\u003eHead diameter: 4 inches; head length: 2.5 inches\u003c\/li\u003e\n\u003cli\u003eGrip range: 0.7500 inches minimum to 3.9375 inches maximum\u003c\/li\u003e\n\u003cli\u003eConcentricity (TIR): 0.0020 inches for repeatable runout\u003c\/li\u003e\n\u003cli\u003eInternal thread: 1.041 inches-24; external thread: 1.242 inches-20\u003c\/li\u003e\n\u003cli\u003eSteel construction for rigidity and wear resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in workholding systems that accept the standard 5C collet form factor, including lathes, collet chucks, and rotary indexing fixtures configured for 5C expanding collets.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist familiar with 5C collet workholding systems. Power down and lock out the machine spindle before installing or removing the collet. Inspect the collet seat and mating chuck surfaces for burrs or contamination before seating the collet, as debris at the interface directly affects runout. Do not exceed the stated grip range, as overextension can damage the collet body or reduce concentricity.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Grip\u003c\/strong\u003e: 0.7500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Grip\u003c\/strong\u003e: 3.9375 inches\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\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112800\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 230-4448\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51719470743858,"sku":"230-4448","price":271.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/23f6c1f8e0588726c3e433573788d70c.jpg?v=1788559593","url":"https:\/\/voomisupply.com\/products\/value-collection-230-4448-5c-expanding-collet-steel","provider":"Voomi Supply","version":"1.0","type":"link"}