Allied Machine 1C20A-14.5 Spade Drill Insert 14.50mm Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING 1C20A-14.5 is a carbide spade drill insert designed for high-performance hole-making operations in demanding materials. Part of the T-A Series, this insert features a 14.50 mm cutting diameter and a 132-degree point angle optimized for accurate entry and reduced thrust force. The substrate is C2 grade carbide (K20 material grade) with a TiAlN PVD coating, which improves heat resistance and tool life when cutting stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Machinists and toolroom professionals install these inserts into compatible T-A Series spade drill holders for production drilling across a range of industrial applications.

This insert is suited for CNC machining centers, lathes, and drill presses where repeatable hole quality is required in difficult-to-machine workpiece materials. Primary workpiece material designations include M (stainless steel), K (cast iron), N (non-ferrous metals), and S (superalloys and titanium), making the 1C20A-14.5 a versatile choice for aerospace, automotive, oil and gas, and general metalworking environments. The Seat Size 0 designation matches it to the corresponding T-A Series holder seat for secure, repeatable seating and precise cutting geometry alignment.

Key Features

• 14.50 mm cutting diameter with 132-degree point angle for controlled entry and reduced walking
• C2 grade carbide substrate (K20 material grade) for hardness and wear resistance
• TiAlN PVD coating improves thermal resistance and extends tool life in high-heat cutting conditions
• Compatible with stainless steel, cast iron, non-ferrous metals, superalloys, and titanium workpieces
• T-A Series design for drop-in replacement into existing T-A Series spade drill holders
• Seat Size 0 for precise holder engagement and repeatable cutting geometry

Compatibility

Designed for use with T-A Series spade drill holders accepting Seat Size 0 inserts at 14.50 mm diameter. Verify holder seat size and series designation before installation to ensure proper fitment and geometry.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the holder is secured in the tool turret or spindle before seating or removing the insert. Use the appropriate T-A Series insert screw and torque driver as specified by the holder manufacturer — do not substitute fasteners. Inspect the holder seat for chips or wear before installing a new insert to prevent seating errors that can affect hole location and tool life.