1/4" Five-Flute ALL4 Chipbreaker Corner-Radius End Mill

This Canadian-made 1/4" carbide end mill combines five-flute geometry, a 0.015" corner radius and an integrated chipbreaker for productive, controlled material removal. Its ALL4 coating provides exceptional resistance to heat, abrasion and wear when machining high-temperature alloys and stainless steel.

Productive Cutting with Reinforced Corners

The chipbreaker geometry helps divide long chips into smaller, more manageable pieces for improved evacuation during demanding machining operations. Five flutes provide additional cutting edges for efficient material removal, while the 0.015" corner radius reinforces the cutting edge to help reduce chipping.

Product Specifications

• Application: High-Temperature Alloys and Stainless Steel (HTAS)
• Series: 680
• Cutting Diameter: 1/4"
• Flute Count: 5
• Length of Cut: 3/8"
• Overall Length: 2"
• Length Designation: Stub Length
• Shank Diameter: 1/4"
• Shank Style: Round
• End Style: 0.015" Corner Radius
• Cutting Ends: Single End
• Chipbreaker: Yes
• Coating: ALL4 (Aluminum Chromium Titanium Nitride)
• Class: Orange
• Material: Solid Carbide
• Product Code: 4324683
• Made In: Canada

Typical Applications

• Machining high-temperature alloys and stainless steel
• Roughing and controlled material removal
• Profiling and shoulder milling
• Pocketing with reinforced internal corners
• Heat-intensive operations requiring improved chip control

Why Choose Skookum End Mills?

Skookum End Mills are made in Canada from premium micro-grain carbide for consistent performance, dependable accuracy and professional-quality results. Backed by more than 25 years of cutting tool experience, they are built to meet the everyday demands of machinists, fabricators and production shops.