Allied 4C11P-20 Spade Drill Insert 20mm Solid Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING 4C11P-20 is a solid carbide spade drill insert designed for high-performance drilling in steel and hard materials. Part of the GEN2 T-A series, this insert features an AM300 PVD coating and a 132-degree point angle, delivering consistent cutting performance and extended tool life in demanding machining applications. At 20 mm in diameter with a Seat Size 1 designation, it fits standard T-A spade drill holder bodies used in production and job-shop environments. Machinists and tooling specialists install this insert in CNC machining centers and drill presses where precise, repeatable hole quality in ferrous and hard materials is required.

This insert is suited for drilling operations in steel and hard materials, classified under workpiece material codes P and H. The GEN2 T-A series is engineered for productivity in production drilling environments where insert change-out speed and consistent performance matter. It is a direct-fit replaceable cutting element, allowing operators to swap worn inserts without removing the holder body, reducing downtime in high-volume drilling cycles. Typical applications include structural fabrication, automotive component machining, and general metalworking where hole quality and tool longevity are priorities.

Key Features

• 20 mm cutting diameter with Seat Size 1 for standard T-A series holder compatibility
• Solid carbide construction with C1 (K35) material grade for hardness and wear resistance
• AM300 PVD coating for improved thermal resistance and reduced tool wear in ferrous materials
• 132-degree point angle optimized for steel and hard material drilling
• GEN2 T-A series design supports fast, indexable insert replacement in the field
• Compact geometry: 1.5 inches wide, 1.5 inches long, 0.38 inches in height, 0.1563 inches thickness

Compatibility

Designed as a direct-fit replacement insert for ALLIED MACHINE AND ENGINEERING GEN2 T-A series spade drill holder bodies in Seat Size 1. Compatible with primary workpiece materials classified as Steel and Hard Material (material codes P and H).

Installation Notes

Installation is performed by machinists or tooling technicians. Always disengage and lock out the machine spindle before replacing drill inserts. Seat the insert fully and evenly into the holder body and secure per the holder manufacturer's clamping specifications before resuming operation. Inspect the holder seat for wear or debris before installing a new insert to ensure proper seating and runout control.