Allied Machine 1C20T-.546 Spade Drill Insert 35/64 in Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING 1C20T-.546 is a solid carbide spade drill insert designed for high-performance hole drilling in demanding industrial applications. Part of the T-A Series, this insert measures 35/64 inches in diameter with a 132-degree point angle and a 0.125-inch thickness. It is finished with a TiN (Titanium Nitride) PVD coating to extend tool life and reduce friction at the cutting edge. The manufacturer grade is C2 (K20), indicating a fine-grain carbide formulation suited to abrasive and interrupted cutting conditions. This insert is installed and replaced by machinists and toolroom technicians working on CNC and manual drilling operations.

This insert is intended for use in T-A Series spade drill holders with a Seat Size 0 designation. It is engineered for drilling stainless steel, cast iron, non-ferrous metals, and super-alloys including titanium. These material categories correspond to ISO workpiece material codes M, K, N, and S. The TiN coating provides a hard, wear-resistant surface layer that performs well across all four of these material groups, making this insert a versatile choice for job shops and production environments handling varied workpiece materials.

Key Features

• 35/64-inch diameter with a 132-degree point angle for clean entry and controlled chip formation
• Solid carbide construction at manufacturer grade C2 (K20) for rigidity and wear resistance
• TiN PVD coating reduces cutting friction and extends insert service life
• Compatible with T-A Series Seat Size 0 spade drill holders
• Rated for stainless steel, cast iron, non-ferrous metals, and super-alloys including titanium

Compatibility

Designed for use with T-A Series spade drill holders requiring a Seat Size 0 insert. Suitable for workpiece materials classified under ISO codes M (stainless steel), K (cast iron), N (non-ferrous metals), and S (super-alloys and titanium).

Installation Notes

Insert installation and replacement should be performed by a qualified machinist or toolroom technician with the drilling unit fully de-energized and the spindle locked. Follow the holder manufacturer torque specifications for the insert clamping screw. Inspect the holder seat for chips or damage before seating a new insert. Proper insert seating is critical to dimensional accuracy and insert retention during cutting.