Kennametal 5544366 Indexable Square-shoulder End Mill

Product Description

The KENNAMETAL 5544366 is an indexable square-shoulder end mill designed for precision milling operations in metalworking and machining applications. Built around the MILL 4-15 series platform, it features a 1-inch cutting diameter and accepts LNGU15T608SRGE insert style inserts secured by a screw-holding method. The toolholder designation is M4D100L1502W100L175. With a 0-degree lead angle, this end mill produces true 90-degree shoulder walls, making it well-suited for face milling, slotting, and shoulder milling where a square step profile is required. Licensed machinists and CNC operators in production shops and tool rooms are the primary installers of this toolholder.

This end mill is appropriate for use on CNC machining centers and manual mills in both production and job-shop environments. The Weldon flat shank provides a positive mechanical engagement with the spindle, reducing pull-out risk during aggressive cuts. With a maximum depth of cut of 15.5 mm (0.61 inches) and an overall length of 4.03 inches, it fits standard tool-change systems and short-reach spindle configurations. It carries 2 insert pockets, supporting balanced cutting forces at moderate to high feed rates in ferrous and non-ferrous materials.

Key Features

• 1-inch cutting diameter with 0-degree lead angle for true square-shoulder profiles
• Maximum depth of cut: 15.5 mm (0.61 inches)
• Weldon flat shank provides positive mechanical retention in the spindle
• Accepts LNGU15T608SRGE insert style, secured by screw-holding method
• 2-insert pocket design supports balanced cutting forces
• Part of the MILL 4-15 series platform for consistent insert availability

Compatibility

Designed for use with LNGU15T608SRGE series inserts. Toolholder ISO designation is M4D100L1502W100L175. Compatible with machines accepting a 1-inch Weldon flat shank.

Installation Notes

Installation should be performed by a qualified machinist or CNC technician. Ensure the machine spindle is fully stopped and the tool-change program is in a safe state before mounting or removing the toolholder. Torque the Weldon set screw against the flat per your shop standard to prevent axial pull-out. Inspect insert seats and seating surfaces for chips or damage before seating new inserts.