Accupro 2500271 Square End Mill 5/16 in 3 Flute Carbide

Product Description

The ACCUPRO 2500271 is a solid carbide square end mill designed for precision milling operations in metal, composites, and hard materials. With a 5/16-inch mill diameter and a 1-1/4-inch length of cut, this tool delivers clean, flat-bottomed slots, pockets, and profile cuts. The 3-flute, right-hand spiral geometry paired with a 60-degree helix angle improves chip evacuation and reduces heat buildup during aggressive cuts. Micrograin carbide construction provides rigidity and wear resistance in demanding applications. The bright, uncoated finish suits general-purpose use across a range of workpiece materials. Overall length is 4 inches, and the tool features a 5/16-inch shank diameter for standard collet or end mill holder mounting.

This end mill is suited for CNC machining centers and manual mills in job shop, production, and maintenance environments. The long-length configuration extends reach into deeper pockets and features compared to standard-length tooling. Centercutting capability allows plunge entry directly into the workpiece, supporting ramping, helical interpolation, and direct plunge applications. It is a single-end tool, typically used in professional machining shops and by skilled tradespeople performing precision metalwork.

Key Features

• 5/16-inch mill diameter with matching 5/16-inch shank for balanced rigidity
• 3-flute right-hand spiral design with 60-degree helix for efficient chip removal
• Micrograin solid carbide construction for extended tool life and edge integrity
• Centercutting geometry supports plunge, ramp, and helical entry
• Long-length configuration with 1-1/4-inch length of cut for deep-pocket access
• Bright, uncoated finish suitable for general-purpose milling applications

Compatibility

Designed as a direct-fit replacement or new-installation end mill for standard 5/16-inch collets and end mill holders on CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the shank fully within the collet or end mill holder to the manufacturer-recommended engagement depth before tightening. Ensure the spindle is fully stopped and locked out before changing tooling. Inspect the shank and collet bore for chips or debris prior to mounting to maintain runout tolerances.