Accupro 39550 Square End Mill 7/16 in 2 Flute Powdered Metal

Product Description

The ACCUPRO 39550 is a square end mill designed for general-purpose milling operations in ferrous and non-ferrous materials. Built from powdered metal, this single-end tool delivers a solid balance of toughness and wear resistance suitable for production shop environments. It features a 7/16 inch cutting diameter, a 13/16 inch length of cut, and a 2-1/2 inch overall length. The 30-degree helix spiral flute geometry promotes efficient chip evacuation, and the centercutting design allows plunge entry. Licensed machinists and CNC operators are the primary users of this tool class.

This end mill is suited for light-to-medium milling passes on manual mills and CNC machining centers. The 3/8 inch shank diameter fits standard collet chucks and end mill holders common in job shops and tool rooms. The uncoated finish makes it a cost-effective choice for non-abrasive materials and applications where re-grinding is part of the tooling workflow. Right-hand cut and right-hand flute orientation align with conventional spindle direction on standard vertical milling setups.

Key Features

• Powdered metal construction for improved toughness over standard HSS
• Centercutting design allows direct plunge milling without a pilot hole
• 30-degree helix spiral flutes for effective chip evacuation
• Right-hand cut and right-hand flute for standard spindle compatibility
• Uncoated finish suitable for re-grinding and non-abrasive material applications
• 2-flute configuration provides clearance for softer materials and slotting operations

Compatibility

Designed as a standard single-end square end mill with a 3/8 inch shank, compatible with collet chucks and end mill holders sized to accept 3/8 inch straight shanks on manual knee mills and CNC vertical machining centers.

Installation Notes

Installation is performed by a machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the shank in a properly sized collet or end mill holder and torque the retention mechanism according to the toolholder manufacturer specifications. Inspect the cutting edges for chipping before use and confirm runout is within acceptable tolerance for the application.