Allied Machine 181T-0026 Spade Drill Insert 13/16 in Cobalt Tin

Product Description

The ALLIED MACHINE AND ENGINEERING 181T-0026 is a cobalt spade drill insert designed for high-performance hole-making in demanding machining applications. Part of the T-A series, this insert features a 132-degree point angle and a physical vapor deposition (PVD) titanium nitride (TiN) coating that extends cutting life and reduces friction at the cutting edge. The 13/16 inch diameter and Seat Size 1 designation make it a direct fit for compatible T-A series spade drill bodies. At 0.1563 inches thick and 0.1 pounds, it is a lightweight but durable insert suited for production drilling environments. Machinists and tooling specialists are the primary installers.

This insert is engineered for use across a broad range of workpiece materials including steel, stainless steel, cast iron, super-alloys, titanium, and hard materials. It is appropriate for both manual and CNC machining centers where consistent hole quality and tool life are critical. The T-A series platform is widely used in production shops, job shops, and aerospace or heavy-equipment manufacturing environments where interrupted cuts and tough alloys are common. The TiN coating provides a visible gold-tone finish that also serves as a wear indicator during use.

Key Features

• 13/16 inch diameter with Seat Size 1 for T-A series drill body compatibility
• Cobalt substrate provides toughness and heat resistance in difficult materials
• TiN PVD coating reduces friction and extends tool life across multiple workpiece types
• 132-degree point angle suits a wide range of general-purpose and production drilling
• 0.1563 inch insert thickness for precise seating in compatible holders
• Rated for steel, stainless steel, cast iron, super-alloys, titanium, and hard materials

Compatibility

Designed for use with T-A series Seat Size 1 spade drill bodies. Confirm body seat size and diameter range before ordering to ensure proper insert fit and clamping.

Installation Notes

Insert replacement should be performed by a qualified machinist with the appropriate insert wrench or torx key for the T-A series clamping screw. Always power down and lock out the spindle before changing inserts. Inspect the drill body seat for chips, debris, or wear before seating the new insert. Do not force the insert into a damaged or improperly sized seat, as this can cause insert breakage or inaccurate hole geometry.