Accupro 95168655 Square End Mill 1 in 5 Flute Carbide

Product Description

The ACCUPRO 95168655 is a solid carbide square end mill designed for high-performance milling in demanding metalworking and machining applications. Built from micrograin carbide stock and finished with an nACRo coating, this single-end tool delivers a 1 inch cutting diameter, a 3-1/4 inch length of cut, and a 6 inch overall length. The 5-flute, variable-helix geometry reduces harmonic chatter during deep-reach passes, improving surface finish and tool life. Centercutting capability allows direct plunge entry. Right-hand cut and right-hand flute direction are standard for conventional CNC mill setups.

This end mill is suited for high-speed finishing and semi-finishing passes in ferrous and hardened materials where coating performance and edge integrity are critical. The nACRo coating provides oxidation resistance and lubricity at elevated cutting temperatures, making it a practical choice for aerospace alloys, die steels, and stainless grades. The 1 inch shank diameter fits standard ER or Weldon-style toolholders common on vertical machining centers and CNC knee mills. The variable-helix flute design also makes it appropriate for applications where vibration or long-reach stability is a concern.

Key Features

• 1 inch cutting diameter with micrograin solid carbide substrate for rigidity and edge retention
• nACRo coating for heat resistance and reduced friction at high surface speeds
• 5-flute variable-helix geometry reduces chatter and improves chip evacuation
• 3-1/4 inch length of cut supports deep-pocket and deep-wall milling operations
• Centercutting design allows plunge milling without a pre-drilled pilot hole
• Right-hand cut, right-hand spiral — compatible with standard CNC spindle direction

Compatibility

Designed as a direct-fit replacement-style solid carbide end mill for CNC machining centers and manual mills using 1 inch bore toolholders, including ER collet chucks and Weldon flat-seat holders.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before loading or unloading any end mill. Seat the shank to the minimum engagement depth recommended by the toolholder manufacturer — typically 1 to 1.5 times shank diameter — and confirm runout with a dial indicator before beginning a cut. Do not exceed the toolholder manufacturer's torque specification for the retention screw or collet nut.