{"product_id":"carmex-internal-un-threadmill-insert-21mm-12-tpi-21-i-12-un-mt7","title":"Carmex Internal UN Threadmill Insert 21mm \/ 12 TPI \/ 21 I 12 UN MT7","description":"\u003cp\u003e\u003cstrong\u003eMill-Thread Insert – UN 12 TPI, Internal\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eCarmex 21 I 12 UN MT7\u003c\/strong\u003e is a precision-engineered internal thread milling insert for machining \u003cstrong\u003eUnified (UN)\u003c\/strong\u003e threads with \u003cstrong\u003e12 TPI\u003c\/strong\u003e. Optimized for CNC helical interpolation milling, it ensures accurate thread profiles, smooth cutting, and excellent surface finish across a wide range of materials.\u003c\/p\u003e\n\u003cp\u003eManufactured from \u003cstrong\u003eMT7 fine-grain carbide\u003c\/strong\u003e, this insert delivers exceptional hardness, wear resistance, and thermal stability—providing long tool life and consistent dimensional accuracy. Its \u003cstrong\u003esize 21 design\u003c\/strong\u003e enhances rigidity, ensuring vibration-free operation for precise thread milling.\u003c\/p\u003e\n\u003cp\u003eFully compatible with \u003cstrong\u003eCarmex SR Series toolholders\u003c\/strong\u003e (single, twin, or multi-insert), it guarantees secure clamping and reliable performance in industrial thread milling applications.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrdering Code:\u003c\/strong\u003e 21 I 12 UN MT7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e Internal Threading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Profile:\u003c\/strong\u003e UN – Unified 60°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTPI:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size:\u003c\/strong\u003e 21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eH (Height):\u003c\/strong\u003e 12 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT (Thickness):\u003c\/strong\u003e 4.7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbide Grade:\u003c\/strong\u003e MT7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge:\u003c\/strong\u003e Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Internal Unified thread milling for precision, mechanical, and general engineering applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Toolholders:\u003c\/strong\u003e SR Series (Single, Twin, Multi-Insert)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCarmex Precision Tools Ltd.\u003c\/strong\u003e produces industry-leading threading solutions, including Thread Turning Inserts, Mill-Thread Inserts, Solid Carbide Threadmills, and SR Toolholders engineered for durability, reliability, and precision.\u003c\/p\u003e","brand":"CARMEX","offers":[{"title":"Default Title","offer_id":51245944864804,"sku":"21I12UNMT7","price":110.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/5598\/3396\/files\/carmex-internal-threadmill-insert-carmex-internal-un-threadmill-insert-21mm-12-tpi-21-i-12-un-mt7-50500044-1198285692.png?v=1786428199","url":"https:\/\/www.layerspecdynamics.com\/de\/products\/carmex-internal-un-threadmill-insert-21mm-12-tpi-21-i-12-un-mt7","provider":"LayerSpec Dynamics","version":"1.0","type":"link"}