Precision Twist Drill 5110008 Hss End Mill 4 Flute 0.5 in

Product Description

The PRECISION TWIST DRILL 5110008 is a high-speed steel (HSS) end mill designed for precision material removal in milling applications. Featuring a Weldon shank for positive engagement in collet and end mill holders, this tool resists slippage under load. The 4-flute geometry provides a balance of chip evacuation and surface finish quality, making it well suited for ferrous and non-ferrous metals, plastics, and composite materials. At 0.5 inch in diameter and 3.25 inches in overall length, it fits a wide range of vertical and horizontal milling setups used by machinists and tool-and-die professionals.

This end mill is intended for use in manual knee mills, CNC machining centers, and bridgeport-style machines where a Weldon shank tool holder is employed. It is a general-purpose cutting tool appropriate for profiling, slotting, and peripheral milling operations in job shop, maintenance, and production environments. Machinists working with steel, aluminum, and similar materials will find the 4-flute configuration effective for finish passes and moderate material removal rates.

Key Features

• High-speed steel (HSS) construction for toughness and re-sharpenability
• Weldon shank design provides positive drive and prevents tool pullout
• 4-flute configuration balances chip clearance with surface finish quality
• 0.5 inch cutting diameter suits common milling holder sizes
• 3.25 inch overall length accommodates standard workholding setups

Compatibility

Designed as an OEM-style replacement or standard tooling selection for milling machines that accept 0.5 inch Weldon shank end mills in standard end mill holders or side-lock holders.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the Weldon shank in a side-lock or Weldon-style holder and tighten the set screw firmly against the flat on the shank. Inspect the cutting edges for damage before each use and do not exceed the recommended speeds and feeds for the workpiece material.

Technical Specifications

• Material: High-Speed Steel (HSS)
• Shank Type: Weldon
• Number of Flutes: 4
• Cutting Diameter: 0.5 inches
• Overall Length: 3.25 inches
• Weight: 0.05 pounds
• Unit of Measure: Each

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 5110008