{"product_id":"allied-machine-1c21t-921-spade-drill-insert-59-64-in-carbide","title":"Allied Machine 1C21T-.921 Spade Drill Insert 59\/64 in Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ALLIED MACHINE AND ENGINEERING 1C21T-.921 is a solid carbide spade drill insert designed for high-performance hole-making operations in demanding machining environments. This insert measures 59\/64 inches in diameter, fits a Seat Size 1 holder, and features a 132-degree point angle for aggressive cutting geometry. The TiN (Titanium Nitride) PVD coating improves surface hardness and extends tool life across a broad range of workpiece materials. It belongs to the T-A Series, a well-established interchangeable spade drill platform used widely in production machining. Machinists, toolroom technicians, and CNC operators install and index these inserts as part of a modular spade drill system.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for drilling operations in stainless steel, cast iron, non-ferrous metals, super-alloys, and titanium. It is appropriate for both manual and CNC drilling setups in industrial, aerospace, and general manufacturing environments. The T-A Series design allows for quick insert changes without removing the holder from the machine, making it a practical choice for high-volume production runs where downtime must be minimized.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e59\/64 inch diameter for precise hole sizing in Seat Size 1 T-A Series holders\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction with C2 (K20) manufacturer grade for hardness and wear resistance\u003c\/li\u003e\n  \u003cli\u003eTiN PVD coating improves surface hardness and reduces built-up edge in difficult materials\u003c\/li\u003e\n  \u003cli\u003e132-degree point angle supports efficient chip formation and reduced thrust forces\u003c\/li\u003e\n  \u003cli\u003eCompatible with stainless steel, cast iron, non-ferrous metals, super-alloys, and titanium workpieces\u003c\/li\u003e\n  \u003cli\u003eInterchangeable insert design allows fast indexing without disturbing holder setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with T-A Series Seat Size 1 spade drill holders. Suitable for primary workpiece materials including stainless steel, cast iron, non-ferrous metal, super-alloys, and titanium (ISO material codes M, K, N, and S).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert indexing and replacement should be performed by a qualified machinist or toolroom technician with the spindle fully stopped and machine locked out per shop lockout\/tagout procedures. Use the appropriate T-A Series insert seating tool to ensure the insert is fully seated and clamped before resuming operation. Inspect the holder pocket and clamping screw for wear or damage each time the insert is changed. Follow the tool manufacturer's recommended speeds and feeds for the specific workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 59\/64 inches\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, Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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-.921\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALLIED MACHINE AND ENGINEERING","offers":[{"title":"Default Title","offer_id":51727392604466,"sku":"1C21T-.921","price":86.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/888efb7f48a8647f85b55bb4451fb710.jpg?v=1788677243","url":"https:\/\/voomisupply.com\/products\/allied-machine-1c21t-921-spade-drill-insert-59-64-in-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}