Osg 70400316 Square End Mill 1/16 in 4 Flute Solid Carbide

Product Description

The OSG 70400316 is a square end mill designed for precision milling in tight geometries. It features a 0.0625 inch cutting diameter, a 3/16 inch length of cut, and a 1/8 inch shank diameter with a 1-3/4 inch overall length. Constructed from solid carbide micrograin material, this tool delivers consistent edge integrity in demanding cutting conditions. The diamond finish coating reduces friction and extends tool life in abrasive or hardened workpiece materials. A 30-degree helix angle promotes chip evacuation while maintaining smooth cutting action. This end mill is installed by machinists and toolroom technicians working in CNC milling centers, vertical mills, and precision machining cells.

This end mill is suited for slotting, profiling, and contouring operations where a small-diameter tool is required. The 4-flute, spiral-flute configuration supports higher feed rates compared to 2-flute designs in non-recutting applications. Its centercutting capability allows plunge entry directly into the workpiece. The 0.056 inch neck diameter provides clearance for work in confined pockets. This tool is appropriate for use in ferrous and non-ferrous materials in both production and prototype environments where tight tolerances are required.

Key Features

• 0.0625 inch cutting diameter with mill diameter tolerance of +0.000 / -0.002 inches for consistent sizing
• Solid carbide micrograin construction for edge stability in fine-detail milling
• Diamond finish for reduced friction and improved tool life in abrasive materials
• 4-flute, right-hand cut, right-hand spiral flute design for efficient chip evacuation
• 30-degree helix angle balances cutting forces and surface finish quality
• Centercutting design allows direct plunge entry without a pre-drilled hole
• 0.056 inch neck diameter provides clearance for deep-pocket and confined-area work

Compatibility

Designed as an OEM-style replacement or direct-application end mill for CNC milling machines and manual mills accepting a 1/8 inch straight shank collet, ER collet chuck, or equivalent toolholder sized for 0.125 inch shank diameters.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and machine is powered down before inserting or removing the tool from the collet or toolholder. Verify collet size matches the 0.125 inch shank diameter exactly before tightening. Do not exceed the recommended depth of cut for the 3/16 inch length of cut, and confirm workholding is secure before initiating the cut to prevent tool deflection or breakage at this diameter.