{"product_id":"allied-machine-438t-0412-spade-drill-insert-4-3-8-in-seat-8","title":"Allied Machine 438T-0412 Spade Drill Insert 4-3\/8 in Seat 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ALLIED MACHINE AND ENGINEERING 438T-0412 is a high speed steel spade drill insert designed for heavy-duty drilling operations in metalworking applications. Part of the GEN2 T-A series, this insert measures 4-3\/8 inches in diameter and fits a Seat Size 8 holder. It carries a TiN (titanium nitride) PVD coating applied over an M4 material grade high speed steel substrate, providing increased surface hardness and extended edge life compared to uncoated tooling. The insert features a 144-degree point angle suited to a range of ferrous and non-ferrous materials. Weighing 0.1 pounds, it installs directly into compatible T-A series spade drill bodies used across production and maintenance drilling environments.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended for use in industrial drilling operations where large-diameter hole making is required. It is compatible with Seat Size 8 GEN2 T-A series spade drill holders and is rated for primary workpiece materials including steel, cast iron, and non-ferrous metals. Typical applications include structural fabrication, heavy manufacturing, and job-shop drilling on vertical mills, radial arm drills, and CNC machining centers. The TiN coating makes it particularly suitable for production runs in steel and cast iron where tool life and chip control are priorities.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-3\/8 inch diameter cutting edge for large-bore hole making\u003c\/li\u003e\n  \u003cli\u003eSeat Size 8 for direct fit into compatible GEN2 T-A series holders\u003c\/li\u003e\n  \u003cli\u003eM4 high speed steel substrate with TiN PVD coating for extended edge life\u003c\/li\u003e\n  \u003cli\u003e144-degree point angle for stable entry and reduced thrust in steel and cast iron\u003c\/li\u003e\n  \u003cli\u003eRated for steel, cast iron, and non-ferrous metal workpiece materials\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.1 pounds for easy handling and quick changeover\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Seat Size 8 GEN2 T-A series spade drill bodies. Compatible primary workpiece materials include steel (P), cast iron (K), and non-ferrous metals (N) per ISO material classification codes.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or tooling technician familiar with indexable spade drill systems. Ensure the machine spindle is fully stopped and locked out before changing inserts. Seat the insert firmly and evenly into the holder pocket and secure with the appropriate fastener to the holder manufacturer torque specification. Inspect the seating surface for chips or debris before each insert change to prevent premature wear or runout.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 4-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeat Size\u003c\/strong\u003e: 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: GEN2 T-A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Angle\u003c\/strong\u003e: 144 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.4375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M4\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Cast Iron, Non-Ferrous Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\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: 438T-0412\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALLIED MACHINE AND ENGINEERING","offers":[{"title":"Default Title","offer_id":51731779551538,"sku":"438T-0412","price":184.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6ac52bde7f9dd05163830871e977c352.jpg?v=1788734851","url":"https:\/\/voomisupply.com\/products\/allied-machine-438t-0412-spade-drill-insert-4-3-8-in-seat-8","provider":"Voomi Supply","version":"1.0","type":"link"}