{"product_id":"allied-machine-438t-0402-spade-drill-insert-4-1-16-in-hss-tin","title":"Allied Machine 438T-0402 Spade Drill Insert 4-1\/16 in Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ALLIED MACHINE AND ENGINEERING 438T-0402 is a spade drill insert designed for high-speed steel drilling applications across steel, cast iron, and non-ferrous metal workpieces. Part of the GEN2 T-A series, this insert measures 4-1\/16 inches in diameter with a 144-degree point angle and a 0.4375-inch thickness. It is finished with a TiN (titanium nitride) PVD coating that extends cutting edge life in production drilling environments. The insert fits a Seat Size 8 holder and is manufactured from M4-grade high speed steel, making it a capable choice for shops running high-volume or interrupted-cut drilling operations.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for use in machining centers, drill presses, and CNC turning centers where large-diameter hole-making is required. The GEN2 T-A series is engineered for use in steel, cast iron, and non-ferrous metal workpieces. Typical applications include manufacturing, heavy fabrication, and production machining environments where consistent hole quality and tool life are critical. The insert mounts into a compatible Seat Size 8 T-A style holder, which must be sourced separately.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-1\/16 inch cutting diameter suitable for large-bore drilling applications\u003c\/li\u003e\n  \u003cli\u003e144-degree point angle for efficient chip formation across multiple workpiece materials\u003c\/li\u003e\n  \u003cli\u003eM4-grade high speed steel construction provides toughness in interrupted cuts\u003c\/li\u003e\n  \u003cli\u003eTiN PVD coating reduces friction and extends cutting tool life\u003c\/li\u003e\n  \u003cli\u003eGEN2 T-A series design for use with compatible Seat Size 8 holders\u003c\/li\u003e\n  \u003cli\u003eCompatible with steel, cast iron, and non-ferrous metal primary workpiece materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Seat Size 8 T-A series spade drill holders. Compatible primary workpiece materials include steel (P), cast iron (K), and non-ferrous metal (N) as specified by the manufacturer. Verify holder seat size and series compatibility before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or tooling technician. Ensure the spindle is fully stopped and machine power is locked out before inserting or removing the insert from the holder. Inspect the insert seat and clamping screw for wear or damage prior to mounting. Follow the holder manufacturer's torque and clamping specifications for the Seat Size 8 holder.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 4-1\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeat Size\u003c\/strong\u003e: 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Angle\u003c\/strong\u003e: 144 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\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\u003eSeries\u003c\/strong\u003e: GEN2 T-A\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-0402\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALLIED MACHINE AND ENGINEERING","offers":[{"title":"Default Title","offer_id":51735215735090,"sku":"438T-0402","price":184.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1d815e9602726b5b7bdb66e1263cfe19_af14501a-ccf3-4ef5-993b-0e2f1d16ca4e.jpg?v=1788770435","url":"https:\/\/voomisupply.com\/products\/allied-machine-438t-0402-spade-drill-insert-4-1-16-in-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}