Allied Machine 10284-0400 Spade Drill Insert 4in Seat H

Product Description

The ALLIED MACHINE AND ENGINEERING 10284-0400 is a spade drill insert designed for high-production drilling operations in metalworking environments. Manufactured from CPM-M4 powdered metal, this insert delivers consistent cutting performance in demanding applications. It features a 130-degree point angle optimized for centering and chip control in ferrous and non-ferrous materials. The insert measures 4 inches in diameter with a seat size H designation and a thickness of 0.6875 inches. At 3.6875 inches in height, it is engineered to seat precisely into compatible H-series spade drill holders. Machinists and tool and die professionals working in production shops or job shops are the primary installers of this insert.

This spade drill insert is suited for drilling steel, cast iron, and non-ferrous metals in both manual and CNC machining centers. It is appropriate for through-hole and blind-hole applications where a replaceable insert system is preferred over solid twist drills. The uncoated CPM-M4 substrate is particularly effective when cutting conditions favor bare high-speed steel performance, such as when cutting fluids are used or when re-sharpening is planned. This insert fits H-series spade drill holders and is commonly used in horizontal boring mills, vertical machining centers, and lathe turrets.

Key Features

• 4-inch diameter cutting edge for large-bore drilling applications
• CPM-M4 powdered metal construction for wear resistance and toughness
• 130-degree point angle for accurate centering and reduced thrust
• Uncoated finish compatible with re-sharpening cycles
• Seat size H for use with H-series Allied Machine spade drill holders
• Rated for steel, cast iron, and non-ferrous metal workpiece materials

Compatibility

Designed for use with H-series spade drill holders. Compatible primary workpiece materials include steel, cast iron, and non-ferrous metals as indicated by material codes P, N, and K.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Before seating the insert, ensure the holder pocket is clean and free of chips or debris that could affect seating accuracy or runout. Secure the insert using the manufacturer-specified fastener hardware for the H-series holder system. Follow all machine lockout and tagout procedures before tooling changes on any CNC or manual machine tool.