Allied Machine 1C51A-0026 Spade Drill Insert 13/16 in Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING 1C51A-0026 is a solid carbide spade drill insert designed for high-performance hole-making in steel and hard materials. Built to T-A series specifications, it features a 132-degree point angle and a TiAlN PVD coating that extends tool life under demanding cutting conditions. The insert measures 0.1563 inches in thickness and fits a Seat Size 1 holder. It is used by machinists and tooling technicians in production drilling operations where precision and durability are required. The C5 (P40) carbide grade provides the hardness and toughness needed for interrupted cuts and tough alloys.

This insert is suited for drilling steel and hard materials in CNC machining centers, manual mills, and dedicated drilling equipment. It fits into T-A series Seat Size 1 spade drill holders, making it a direct replacement or replenishment insert in existing tooling setups. Typical applications include general-purpose production drilling in job shops and manufacturing facilities working with ferrous metals and hard workpiece materials.

Key Features

• 13/16 inch diameter for precise hole sizing in compatible holders
• 132-degree point angle for self-centering entry and reduced thrust in steel
• Solid carbide construction with C5 (P40) grade for hardness and toughness
• TiAlN PVD coating reduces heat buildup and extends cutting edge life
• T-A series Seat Size 1 compatibility for use with existing Allied T-A holders
• 0.1563 inch thickness ensures proper seating and secure clamping in the holder

Compatibility

Designed for use with ALLIED MACHINE AND ENGINEERING T-A series spade drill holders in Seat Size 1 configuration. Primary workpiece materials are steel and hard materials (Material Grade C5, codes P and H).

Installation Notes

Insert installation should be performed by a qualified machinist or tooling technician with the spindle fully stopped and machine power locked out. Use the appropriate torque wrench and seat screw per the holder manufacturer guidelines to secure the insert without over-tightening. Inspect the seat and clamping surfaces for chips or wear before installing a new insert, as debris can affect seating accuracy and cause premature failure. Follow all applicable machine shop safety procedures during changeover.