Osg 5742000 Square End Mill 11/16 in 4 Flute Hss

Product Description

The OSG 5742000 is a square end mill designed for general-purpose milling operations in ferrous and non-ferrous materials. Built from 3% vanadium high speed steel, it delivers improved wear resistance and edge retention compared to standard M2 HSS. The 4-flute, spiral-flute geometry with a 30-degree helix angle promotes smooth chip evacuation and stable cutting at moderate feed rates. At 11/16 inches in diameter with a 1/2-inch shank, this end mill fits a wide range of vertical machining centers, knee mills, and manual milling setups. It is uncoated and centercutting, meaning it can be used for both peripheral milling and plunge operations.

This end mill is suited for shop-floor use in toolrooms, job shops, and production environments where vanadium HSS tooling is specified for cost-effective general milling. The regular-length body — 1-5/8 inches length of cut and 3-5/8 inches overall length — makes it appropriate for standard-depth slotting, profiling, and pocketing applications where extended-reach tooling is not required. Right-hand cut and right-hand flute orientation are standard for conventional and climb milling on most CNC and manual platforms.

Key Features

• 3% vanadium high speed steel construction for improved hardness and edge life over standard HSS
• 4-flute spiral geometry with 30-degree helix for balanced chip flow and surface finish
• Centercutting design supports plunge entry without a pre-drilled pilot hole
• Right-hand cut and right-hand flute — compatible with standard spindle rotation
• Uncoated finish allows easy re-sharpening by a qualified tool grinder
• Regular-length proportions minimize deflection in standard-depth cuts

Compatibility

Designed as an OEM-style replacement or direct-use end mill for standard 1/2-inch collet or end mill holder setups on vertical machining centers, knee mills, and manual milling machines requiring 11/16-inch diameter square end tooling.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Secure the 1/2-inch shank fully into a clean, properly sized collet or end mill holder and torque to the machine manufacturer's specification. Inspect the shank and flutes for damage or runout before use. Always bring spindle to a full stop before changing or adjusting tooling.