Drillco 5250A Series High-Speed Steel Long Length Finishing Center Cutting End Mill, Uncoated (Bright) Finish, 4 Flute, 30 Degrees Helix, Square Nose End, 1-1/2" Cutting Length, 3/8" Cutting Diameter, 3-1/4" Length, 3/8" Shank Diameter

Drillco multi-flute end mill has a better finishing capability than the 2-flute end mill. At any given instance, at least one and often two of the teeth are solidly in the cut. The cutting action is smoother than that of the 2-flute end mill, with less chatter and flutter. The multi-flute end mill has ample chip carrying capacity, and at the same time the finish is usually fine enough that a second finishing cut is unnecessary. High-speed steel tool is good for most general purpose application, offering a combination of hardness and toughness for wear resistance. Uncoated tool feature just the base substrate without any additional treatment or coating and is suitable for a wide range of application. Weldon shank feature a round shank with one of more flats machined into the side for easy indexing and alignment. When run in a counterclockwise direction (right-hand cut) spiral fluted tool evacuate chips up and out of the cut to reduce clogging.

• High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
• Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
• Weldon shanks feature a round shank with one of more flats machined into the side for easy indexing and alignment
• When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
• The multi-flute end mill has a better finishing capability than the 2-flute end mill