Allied Machine 151A-.796 Spade Drill Insert 51/64 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 151A-.796 is a cobalt spade drill insert designed for high-performance hole-making in demanding machining applications. Measuring 51/64 inch in diameter with a 0.1563-inch thickness, this insert features a 132-degree point angle and a TiAlN (titanium aluminum nitride) PVD coating that reduces heat buildup and extends tool life at elevated cutting speeds. It fits Seat Size 1 toolholders in the T-A Series system. Machinists and tooling specialists working in production environments rely on this insert for consistent, repeatable drilling performance in tough materials.

This insert is suited for drilling steel, stainless steel, cast iron, super-alloys, and titanium — material classifications P, M, K, and S. It is used in CNC machining centers, lathes with live tooling, and dedicated drilling machines where spade drill systems replace conventional twist drills for improved chip evacuation and reduced tooling cost per hole. Typical applications include production runs requiring precise hole diameters with controlled depth in ferrous and exotic alloy workpieces.

Key Features

• 51/64 inch cutting diameter for precise hole sizing without secondary boring in many applications
• 132-degree point angle optimized for penetration and centering across a broad range of workpiece materials
• Cobalt substrate provides heat and wear resistance beyond standard high-speed steel inserts
• TiAlN PVD coating reduces friction and thermal load, extending insert service life at higher surface footage
• T-A Series Seat Size 1 interface ensures positive seating and repeatable runout in compatible holders
• Rated for primary use in steel, stainless steel, cast iron, super-alloys, and titanium workpieces

Compatibility

Compatible with T-A Series Seat Size 1 spade drill holders. Designed for use in steel (P), stainless steel (M), cast iron (K), and super-alloys and titanium (S) workpiece materials as specified by the manufacturer.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the toolholder is clean and free of chips or debris before seating the insert, as contamination on the seat face will affect runout and hole quality. Torque the insert retaining screw according to the toolholder manufacturer specifications for the T-A Series Seat Size 1 holder. Always confirm spindle is fully stopped and machine is locked out before changing inserts.