YG-1 GM153004 Square End Mill 4 Flute 0.125 in Hss

Product Description

The YG-1 GM153004 is a single-end square end mill designed for precision milling operations in metal fabrication and machining environments. Built from micrograin high speed steel, this 4-flute tool offers a 0.125 inch shank diameter and delivers consistent chip evacuation and surface finish on a range of ferrous and non-ferrous workpiece materials. The square end geometry produces flat-bottomed cuts, shoulders, and slots with tight dimensional control. This tool is suited for conventional CNC machining centers and manual mills where a reliable, general-purpose end mill is needed for production or maintenance work.

This end mill is a fit for light-to-medium-duty milling operations in job shops, tool rooms, and production environments. The right-hand cut and right-hand flute direction make it compatible with standard spindle rotation on the majority of vertical and horizontal milling machines. Single-end construction means the tool is replaced once the cutting edge is worn rather than indexed or flipped. Machinists and toolroom operators working with steel, aluminum, brass, and similar materials will find it a straightforward drop-in for general slotting, profiling, and facing work.

Key Features

• Micrograin high speed steel construction for extended tool life over standard HSS grades
• 4-flute design for improved surface finish and higher feed rates in finish milling
• 0.125 inch shank diameter suits standard collets and end mill holders for small-diameter work
• Right-hand cut and right-hand helix for use with standard CNC and manual mill spindle rotation
• Square end geometry produces flat-bottomed slots, shoulders, and profiles
• Single-end configuration for straightforward tool change when the cutting edge is spent

Compatibility

Designed as a standard single-end square end mill compatible with milling machines and machining centers equipped with collet chucks or end mill holders accepting a 0.125 inch shank diameter.

Installation Notes

Installation is performed by a machinist or toolroom technician using the appropriate collet or end mill holder sized to the 0.125 inch shank. Ensure the machine spindle is fully stopped and locked out before inserting or removing tooling. Seat the shank to the recommended minimum engagement depth in the holder and torque the drawbar or collet nut per the machine manufacturer specification. Confirm runout with a dial indicator before beginning a cut to protect both the tool and the workpiece.