Allied Machine 151T-18 Spade Drill Insert 18mm Cobalt Tin

Product Description

The ALLIED MACHINE AND ENGINEERING 151T-18 is a spade drill insert designed for high-performance hole-making in demanding metalworking applications. Built from cobalt (material grade T15) and finished with a TiN (titanium nitride) PVD coating, this insert delivers wear resistance and extended cutting life in tough materials. It features a 132-degree point angle and fits Seat Size 1 holders in the T-A spade drill series. At 0.1563 inches thick and sized for an 18 mm bore diameter, this insert is a direct fit for machinists and toolroom professionals running T-A series spade drill bodies on CNC lathes, machining centers, and drill presses.

This insert is suited for production and job-shop environments where consistent hole quality in ferrous and exotic materials is required. Primary workpiece materials include steel, stainless steel, cast iron, super-alloys, and titanium, making it a versatile choice for aerospace, automotive, oil and gas, and general precision machining operations. It is installed by machinists and toolroom technicians as a replacement or consumable insert in existing T-A series spade drill holders.

Key Features

• 18 mm cutting diameter for precise bore sizing in Seat Size 1 T-A holders
• Cobalt construction (T15 material grade) for high hardness and heat resistance
• TiN PVD coating reduces friction and extends tool life in ferrous and exotic workpiece materials
• 132-degree point angle optimized for general-purpose drilling across a broad material range
• Rated for steel, stainless steel, cast iron, super-alloys, and titanium workpiece materials
• Single-piece package quantity suits toolcrib replenishment and individual replacement needs

Compatibility

Designed for use with T-A series Seat Size 1 spade drill holders. Compatible workpiece material codes P (steel), M (stainless steel), K (cast iron), and S (super-alloys and titanium) as specified in the product attributes.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the drill holder is removed from the spindle and the machine is fully locked out and de-energized before changing inserts. Use the appropriate T-A series insert screw and torque driver as specified by the holder manufacturer — do not over-tighten by hand. Inspect the holder seat for wear or damage before seating a new insert to ensure proper alignment and cutting performance.