Precision Twist Drill 5110005 Hss End Mill 4 Flute 3/8 in

Product Description

The PRECISION TWIST DRILL 5110005 is a high-speed steel (HSS) end mill designed for metal removal in milling operations across a range of trade and industrial applications. Featuring a Weldon shank for positive tool holding and a 4-flute geometry, this end mill delivers clean cutting action and dimensional stability under load. The 3/8 inch tip diameter and 2.5 inch overall length make it well suited for slot milling, profiling, and peripheral cuts on ferrous and non-ferrous materials. HSS construction provides toughness and resistance to chipping in interrupted cuts where carbide tooling may be less forgiving.

This end mill is a practical choice for machinists, maintenance mechanics, and trade professionals performing manual or CNC milling work on steel, aluminum, brass, and similar materials. The 4-flute design improves surface finish and feed rate capability compared to 2-flute variants, making it appropriate for finishing passes and general-purpose material removal in production or job-shop environments.

Key Features

• High-speed steel (HSS) construction for toughness in interrupted and general-purpose cuts
• Weldon shank design provides a secure, slip-resistant tool holding interface
• 4-flute geometry supports improved surface finish and higher feed rates
• 3/8 inch tip diameter suitable for slot milling, profiling, and peripheral operations
• 2.5 inch overall length fits standard milling setups without excessive overhang
• Sold individually — single-piece unit of measure

Compatibility

Designed as an OEM-style replacement or direct-use HSS end mill compatible with standard Weldon-shank milling tool holders accepting a 3/8 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or trained maintenance technician. Ensure the milling machine spindle is fully stopped and locked out before seating or removing the end mill from the tool holder. Tighten the Weldon shank set screw to the tool holder manufacturer's specification to prevent axial pullout during operation. Inspect the cutting edges for chipping or wear before each use and replace the tool if damage is observed.

Technical Specifications

• Material: High-Speed Steel (HSS)
• Shank Type: Weldon
• Number of Flutes: 4
• Tip Diameter: 3/8 inch
• Overall Length: 2.5 inches
• Weight: 0.01 pounds
• Unit of Measure: Each

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 5110005