Allied Machine 1C20A-0017 Spade Drill Insert 17/32 in Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING 1C20A-0017 is a solid carbide spade drill insert engineered for precision hole-making in demanding machining operations. Part of the T-A series, this insert features a 17/32 inch diameter, a 132-degree point angle, and a TiAlN PVD coating applied over a C2 (K20) carbide substrate. The TiAlN coating improves heat resistance and wear life, making this insert well suited for high-speed drilling where tool life and dimensional consistency are critical. Seat Size 0 designates the compatible holder body class. This insert is installed by machinists and tooling technicians working in CNC and manual drilling applications.

This insert is designed for drilling stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. The T-A spade drill system is commonly used in production machining environments where through-coolant, indexable tooling is preferred over solid twist drills. The 132-degree point geometry suits flat-bottomed entry and exit conditions common in these material groups. Applications include job shop and production floor drilling on lathes, machining centers, and dedicated drilling machines.

Key Features

• 17/32 inch diameter, Seat Size 0, compatible with T-A series holder bodies
• 132-degree point angle for controlled entry on stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Solid carbide construction, manufacturer grade C2 (K20), for rigidity and wear resistance
• TiAlN PVD coating improves thermal resistance and extends tool life in high-speed drilling
• Indexable insert design reduces downtime compared to regrinding solid drills
• 0.125 inch insert thickness

Compatibility

Designed for use with T-A series Seat Size 0 spade drill holder bodies. Verify holder body seat size and diameter range before installation. No additional compatible model numbers were specified in the product data.

Installation Notes

Installation is performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before seating or removing the insert. Use the manufacturer-specified torx or hex key to secure the insert screw to the holder body — do not overtighten or substitute fasteners. Inspect the holder seat for chips or debris before seating the insert to ensure proper contact and runout accuracy.