Allied 154T-0218-FB Spade Drill Insert 2-9/16 in Cobalt Tin

Product Description

The ALLIED MACHINE AND ENGINEERING 154T-0218-FB is a spade drill insert engineered for high-performance hole-making in demanding machining applications. Part of the T-A series, this insert measures 2-9/16 inches in diameter and seats in a size 4 holder. It is manufactured from cobalt high-speed steel and finished with a PVD-applied TiN (titanium nitride) coating for extended tool life and reduced friction at the cutting edge. The 180-degree point angle delivers a flat-bottom entry profile suited to interrupted cuts and cross-hole drilling. At 0.16 pounds, it is a direct-replacement insert designed for use in compatible T-A series spade drill holders on CNC machining centers and manual lathes.

This insert is intended for production drilling in steel, stainless steel, cast iron, super-alloys, and titanium workpieces. It fits applications across general metalworking, aerospace component machining, energy sector part production, and heavy equipment manufacturing. The cobalt substrate provides heat resistance and edge retention when drilling work-hardening materials such as stainless steel and titanium alloys. Typical install scenarios include replacing worn or chipped inserts on T-A series bodies already set up in a machine tool without disturbing the holder setup.

Key Features

• 2-9/16 inch diameter cutting edge for large-diameter through and blind-hole drilling
• Cobalt HSS substrate delivers superior heat and wear resistance versus standard M2 high-speed steel
• PVD TiN coating reduces built-up edge and extends insert life on ferrous and exotic materials
• 180-degree point angle produces a flat-bottom hole profile and supports cross-hole entry
• Thickness of 0.3125 inches ensures rigid seating in size 4 T-A series holders
• Rated for steel, stainless steel, cast iron, super-alloys, and titanium workpiece materials

Compatibility

Designed as a replacement insert for T-A series size 4 spade drill holders. Compatible primary workpiece materials include steel (P), stainless steel (M), cast iron (K), and super-alloys and titanium (S).

Installation Notes

Installation is performed by a machinist or tooling technician. Confirm the machine spindle is fully stopped and the tool is secured or removed from the spindle before changing the insert. Seat the insert flush against the holder pocket and torque the clamping screw per the holder manufacturer specification. Inspect the seating surface and clamping screw threads for chips or debris before reuse to prevent insert movement during cutting.