Allied Machine 151N-0027 Spade Drill Insert 27/32 in Cobalt Ticn

Product Description

The ALLIED MACHINE AND ENGINEERING 151N-0027 is a cobalt spade drill insert designed for high-performance hole-making in demanding machining applications. Part of the T-A Series, this insert features a 132-degree point angle, a TiCN (Titanium Carbonitride) PVD coating, and a Seat Size 1 designation. The 27/32-inch diameter and 0.1563-inch thickness make it a precise, repeatable cutting tool suited for production drilling operations. It is installed by machinists and toolroom professionals working in CNC or manual drilling setups where insert-style spade drills are preferred over solid twist drills for cost efficiency and flexibility.

This insert is engineered for use on steel, stainless steel, cast iron, super-alloys, and titanium workpieces, covering ISO material classifications P, M, K, and S. It fits the T-A Series spade drill holder system at Seat Size 1, making it appropriate for a wide range of production machining environments including job shops, aerospace component manufacturing, energy sector machining, and general metalworking. The TiCN PVD coating improves wear resistance and surface hardness, extending tool life across these abrasive and tough materials.

Key Features

• 27/32-inch cutting diameter for precise hole sizing without pilot drilling in compatible holders
• 132-degree point angle optimized for entry performance on steel and hard alloy workpieces
• TiCN PVD coating increases surface hardness and reduces tool wear on abrasive materials
• Cobalt substrate provides thermal resistance and toughness beyond standard HSS inserts
• T-A Series Seat Size 1 interface ensures repeatable insert indexing and secure holder engagement
• Compatible with ISO material groups P, M, K, and S covering a broad range of metalworking applications

Compatibility

Designed for use with T-A Series spade drill holders at Seat Size 1. Compatible primary workpiece materials include steel, stainless steel, cast iron, super-alloys, and titanium (ISO classifications P, M, K, and S). No additional specific holder or machine model compatibility data was provided in the source data.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician following the holder manufacturer's insert seating procedure. Ensure the machine spindle is fully stopped and locked out before changing or indexing the insert. Verify the seat and clamping screw are free of chips and debris before seating the insert to maintain proper alignment and cutting geometry. Follow applicable shop safety procedures and the holder manufacturer's torque recommendations for the clamping screw.