5/16" HTAS ALL4 End Mill with 0.030" Corner Radius

This Canadian-made solid carbide end mill combines four-flute geometry with a 0.030" corner radius for increased cutting-edge strength and controlled internal radii. Designed for stainless steel and high-temperature alloys, its ALL4 coating provides excellent resistance to heat, abrasion and wear.

Added Edge Strength for Demanding Machining

The 0.030" corner radius reinforces the cutting edges to help reduce corner chipping and extend tool life during demanding operations. Its Series 580 HTAS design supports stable profiling, pocketing and shoulder milling, while the short-length construction promotes rigidity and consistent surface finishes.

Product Specifications

• Performance Series: HTAS – High Temp Alloy & Stainless
• Series: 580
• Class: Orange
• Length Designation: S
• Cutting Diameter: 5/16"
• Cutting Diameter Tolerance: +0.0000"/-0.0020"
• Number of Flutes: 4
• Length of Cut: 7/16"
• Overall Length: 2-1/2"
• Shank Diameter: 5/16"
• Shank Diameter Tolerance: +0.0000"/-0.0004"
• Shank Style: Round
• End Style: Corner Radius
• Corner Radius: 0.030"
• End Type: Single End
• Coating: ALL4 (Aluminum Chromium Titanium Nitride)
• Material: Solid Carbide
• Made In: Canada

Typical Applications

• Machining stainless steel
• High-temperature and heat-resistant alloys
• Profiling with radiused internal corners
• Pocketing and shoulder milling
• Applications requiring increased corner strength

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.