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

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

Improved Chip Control with Reinforced Corners

The chipbreaker geometry helps divide long chips into smaller, more manageable pieces for improved evacuation during heavy material removal. A 0.015" corner radius reinforces the cutting edge to help reduce chipping, while the stub-length construction provides dependable rigidity and stability.

Product Specifications

• Application: High-Temperature Alloys and Stainless Steel (HTAS)
• Series: 680
• Cutting Diameter: 1/4"
• Flute Count: 4
• 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: 4324679
• 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.