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Square End Mill: Inch Mill Dia Measurement System, Bright (Uncoated), Cobalt Steel, 2 Flutes, Center Cutting, 5/16 in Mill Dia

Item # 504W677

$19.26 Each

Product Specs

Finish/Coating: Bright (Uncoated)
Material: Cobalt Steel
Mill Diameter Measurement System: Inch
Number of Flutes: 2
Center Cutting: Center Cutting
Mill Diameter: 5⁄16 in
Length of Cut: 9⁄16 in
Overall Length: 2 1⁄2 in
Shank Diameter: 3⁄8 in
Helix Angle: 30 °
Single or Double End: Single
Material Application (First Choice): Stainless Steel; Heat-Resistant Materials
Chipbreaker: No
Color: Gray
Cutting Application: Peripheral Cutting
Cutting Direction: Right Hand
End Shape: Square End
Extended Reach Neck: No
Features: High Red Hardness for High Heat Conditions
Flute Spiral Direction: Right Hand Spiral
Flute Type: Spiral
For Material Hardness: 63-68 HRC
Helix Style: Low
Keyway Mill: No
Length Type: Regular
Material Application ISO Number (First Choice): S; M
Material Grade: M42
Mill Diameter Tolerance: +0.000 to -0.0015 in
Miniature End Mill: No
Number of Coolant Holes: 0
Overall Length Tolerance: +0.0062 to -0.000 in
Powdered Metal Material: No
Rib Processing: No
Roughing Type: Finishing
Shank Diameter Tolerance: -0.0001 to -0.0005 in
Shank Type: Straight With Weldon Flats
Specifications Met: ANSI
Through Coolant: No
Variable Helix: No

Compliance and Restrictions

Country Of Origin

  • USA

About Square End Mills

Create features with sharp inside corners using square end mills, which have a square nose at the tip of the tool. Square end mills are commonly used for counterboring, side and face milling, and milling square shoulders.

In general, end mills with more flutes allow a higher feed rate, while end mills with fewer flutes permit faster chip clearance. For best results, choose the shortest end mill that will work for your application.

A good choice for demanding milling applications, cobalt steel end mills can be used at higher speeds and are more wear resistant than standard high speed steel end mills, making them suitable for use with hard materials such as heat-treated steels, stainless steel, and titanium alloys.