{"product_id":"value-collection-230-4221-5c-round-collet-21mm","title":"Value Collection 230-4221 5C Round Collet 21mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 230-4221 is a 5C round collet machined from steel for use in 5C-compatible spindles and collet chucks on lathes, milling machines, and grinding fixtures. The collet measures 21.00 mm in nominal collet size and holds a total indicated runout (TIR) of 0.015 mm, making it suitable for precision turning and workholding applications where concentricity matters. The 1.041-24 internal thread and 1.242-20 external thread conform to standard 5C geometry. At 0.51 pounds, the part ships as a single collet. Licensed machinists and toolroom technicians are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis collet is designed for standard 5C collet-style spindles commonly found on bench lathes, bar-feed lathes, indexing fixtures, and rotary tables in light to medium production environments. It is appropriate for both manual and CNC turning setups where a 5C nose style is specified. The UNSPSC code 27112800 classifies it within cutting and holding tools. No special adapters are required beyond a standard 5C-compatible spindle or chuck body.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5C round collet style for broad compatibility with standard 5C spindle tooling\u003c\/li\u003e\n  \u003cli\u003e21.00 mm nominal collet size for consistent workholding\u003c\/li\u003e\n  \u003cli\u003eTIR of 0.015 mm for precision concentricity in turning and grinding operations\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability under repetitive clamping loads\u003c\/li\u003e\n  \u003cli\u003e1.041-24 internal thread and 1.242-20 external thread per standard 5C geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard-geometry 5C round collet replacement for use in any 5C-compatible spindle, collet chuck, or indexing fixture that accepts the 1.242-20 external thread specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or toolroom technicians. Before inserting or removing the collet, ensure the spindle is fully de-energized and at a complete stop. Thread the collet into the spindle nose by hand first to confirm clean thread engagement before applying a collet wrench. Inspect collet bore and threads for chips or burrs prior to each use, as contamination directly affects TIR.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Type\u003c\/strong\u003e: 5C Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Size\u003c\/strong\u003e: 21.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTIR\u003c\/strong\u003e: 0.015 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Thread Size\u003c\/strong\u003e: 1.041-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Thread Size\u003c\/strong\u003e: 1.242-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.51 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: 230-4221\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51700509475122,"sku":"230-4221","price":45.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5fbc53bfb0ea921d7b40943750a31e17.jpg?v=1788391300","url":"https:\/\/voomisupply.com\/products\/value-collection-230-4221-5c-round-collet-21mm","provider":"Voomi Supply","version":"1.0","type":"link"}