{"product_id":"allied-machine-1c21t-21-spade-drill-insert-21mm-carbide-tin","title":"Allied Machine 1C21T-21 Spade Drill Insert 21mm Carbide Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ALLIED MACHINE AND ENGINEERING 1C21T-21 is a solid carbide spade drill insert designed for high-performance hole-making in demanding machining applications. Part of the T-A series, this insert seats into Size 1 spade drill holders and features a 132-degree point angle optimized for controlled entry and chip formation. The insert carries a TiN (titanium nitride) PVD coating applied through physical vapor deposition, which extends tool life and reduces built-up edge when cutting abrasive or work-hardening materials. At 0.1563 inches thick and a nominal 21 mm cutting diameter, it fits within a compact, repeatable format suited for production-volume drilling.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended for use in metal-cutting environments where stainless steel, cast iron, non-ferrous metals, super-alloys, and titanium are the primary workpiece materials — material codes M, K, N, and S respectively. The T-A series spade drill system is a common choice in job shops and production facilities running CNC machining centers, lathes with driven tooling, or dedicated drilling machines. The insert replacement design allows holders to be reused while only the cutting element is swapped out, reducing per-hole tooling cost in high-volume runs. Minimum order quantity is 2 inserts; each package contains 1.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction with C2 (K20) manufacturer grade for hardness and wear resistance\u003c\/li\u003e\n  \u003cli\u003eTiN PVD coating reduces friction and extends tool life in abrasive materials\u003c\/li\u003e\n  \u003cli\u003e132-degree point angle for controlled drill entry and reduced thrust force\u003c\/li\u003e\n  \u003cli\u003e21 mm cutting diameter in a Size 1 seat format for T-A series holders\u003c\/li\u003e\n  \u003cli\u003eRated for stainless steel, cast iron, non-ferrous metals, super-alloys, and titanium\u003c\/li\u003e\n  \u003cli\u003eReplaceable insert design allows holder reuse and lowers per-hole tooling cost\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with T-A series Size 1 spade drill holders. Compatible workpiece materials include stainless steel (M), cast iron (K), non-ferrous metals (N), and super-alloys and titanium (S) per ISO material classification codes.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert seating and clamping should be performed by a machinist or tooling technician following the holder manufacturer torque and seating procedure. Ensure the holder pocket and insert seat are clean and free of chips before seating the insert to prevent improper seating or insert rocking. Machine spindle must be fully stopped and locked out before any insert change. Verify insert is fully seated and clamped per the holder specification before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 21 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeat Size\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: T-A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Angle\u003c\/strong\u003e: 132 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: C2 (K20)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Classification\u003c\/strong\u003e: PVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1563 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Stainless Steel, Cast Iron, Non-Ferrous Metal, Super-alloys and Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 2\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: ALLIED MACHINE AND ENGINEERING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1C21T-21\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALLIED MACHINE AND ENGINEERING","offers":[{"title":"Default Title","offer_id":51749460902194,"sku":"1C21T-21","price":163.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/888efb7f48a8647f85b55bb4451fb710_a79a3849-b443-4b64-b326-ac360b5ad9c5.jpg?v=1788906383","url":"https:\/\/voomisupply.com\/products\/allied-machine-1c21t-21-spade-drill-insert-21mm-carbide-tin","provider":"Voomi Supply","version":"1.0","type":"link"}