Allied Machine 1C51A-.796 Spade Drill Insert 51/64 in

Product Description

The ALLIED MACHINE AND ENGINEERING 1C51A-.796 is a solid carbide spade drill insert designed for precision hole-making in steel and hard materials. Built to T-A series specifications with a Seat Size 1 designation, this insert features a 132-degree point angle and a TiAlN (Titanium Aluminum Nitride) PVD coating that reduces heat buildup and extends tool life in demanding cutting applications. At 0.1563 inches thick and engineered to cut a 51/64-inch diameter hole, this insert delivers consistent performance on CNC machining centers, drill presses, and manual machines used in metal fabrication and industrial manufacturing. It carries a C5 (P40) carbide grade rating suitable for interrupted and continuous cuts in ferrous materials.

This insert is intended for use in steel and hard material machining environments, including general-purpose production work and job-shop applications where consistent bore diameter and surface finish are required. The T-A series spade drill system is widely used in industrial metalworking operations. This insert fits Seat Size 1 T-A series holders and is suited for machinists and tooling professionals working with ferrous workpieces coded P and H under ISO material classification standards.

Key Features

• 51/64-inch cutting diameter for precise hole sizing
• 132-degree point angle reduces thrust and improves chip formation in steel
• Solid carbide construction with C5 (P40) grade for strength in ferrous cutting
• TiAlN PVD coating improves heat resistance and extends insert service life
• T-A series Seat Size 1 compatibility for use with matching drill holders
• 0.1563-inch insert thickness for stable seating in the holder pocket

Compatibility

Designed for use with T-A series Seat Size 1 spade drill holders. Primary workpiece materials are steel and hard materials, classified under ISO material codes P and H.

Installation Notes

Installation and replacement of spade drill inserts should be performed by a qualified machinist or tooling technician with the machine powered down and all energy sources locked out per OSHA lockout/tagout procedures. Seat the insert fully in the holder pocket and secure with the appropriate clamping screw to manufacturer torque guidelines using calibrated tooling. Inspect the holder seat for chips or wear before installing a new insert, as a damaged seat can affect insert geometry and cutting performance. Handle carbide inserts carefully to avoid edge chipping prior to use.