Allied 1C20A-.609 Spade Drill Insert 39/64 in Solid Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING 1C20A-.609 is a solid carbide spade drill insert designed for high-performance hole-making in demanding machining applications. At 39/64 inches in diameter with a 132-degree point angle, this insert delivers precise entry geometry and efficient chip evacuation. The TiAlN (titanium aluminum nitride) PVD coating provides thermal resistance and extended cutting life in abrasive and high-temperature materials. Seat Size 0 designation places this insert in the T-A series holder system. Machinists and tooling specialists working in production or job-shop environments rely on this insert for consistent, repeatable results across a range of workpiece materials.

This insert is suited for drilling stainless steel, cast iron, non-ferrous metals, and super-alloys including titanium. It fits the T-A series spade drill holder system and is appropriate for CNC machining centers, lathes with live tooling, and drill presses where spade-style insert tooling is specified. The C2 (K20) carbide grade makes it a strong choice for interrupted cuts and materials that require controlled heat management at the cutting edge.

Key Features

• 39/64 inch cutting diameter with 132-degree point angle for accurate hole entry
• Solid carbide construction in C2 (K20) grade for hardness and wear resistance
• TiAlN PVD coating for thermal stability in stainless steel, super-alloys, and titanium
• T-A series, Seat Size 0 compatibility for direct holder system fit
• Rated for workpiece material codes M, K, N, and S covering a broad material range
• 0.125 inch insert thickness for rigid seating and reduced deflection

Compatibility

Designed for use with T-A series Seat Size 0 spade drill holders. Compatible with primary workpiece materials including stainless steel (M), cast iron (K), non-ferrous metals (N), and super-alloys and titanium (S).

Installation Notes

Installation should be performed by a qualified machinist familiar with indexable insert tooling systems. Ensure the holder and seat are clean and free of chips or debris before seating the insert. Secure the insert with the appropriate torque driver per the holder manufacturer's fastener specifications. Do not run the insert without confirming proper seat engagement, as an improperly seated insert can cause tool failure or workpiece damage.