Description

The SECO 17002343 is a solid carbide corner radius end mill designed for high-performance milling in demanding material applications. Built to the S938R series specification, it features a 5/8 inch cutting diameter, a 0.030 inch corner radius, and 9 flutes in a super-close pitch configuration. The AlTiN (aluminum titanium nitride) PVD coating provides thermal resistance and extended tool life when cutting at elevated temperatures. At 3 inches overall length with a 3/4 inch length of cut, this is a stub-length tool optimized for rigidity. It is installed in CNC machining centers and milling machines by machinists and toolroom professionals working in production or job-shop environments.

This end mill is rated for use in steel, stainless steel, cast iron, superalloys, and titanium, making it well suited for aerospace, die-and-mold, and general precision machining operations. The single-end, right-hand cutting geometry with a medium helix angle supports both roughing and finishing passes. The stub length design reduces deflection and improves surface finish in shorter-reach applications. It mounts in standard straight-bore toolholders with a 5/8 inch shank diameter.

Key Features

9-flute super-close pitch design supports aggressive feed rates in steel and stainless steel
AlTiN PVD coating improves heat resistance and tool life in high-speed dry or near-dry cutting
0.030 inch corner radius reduces stress concentration and chipping at the cutting edge
Micrograin solid carbide substrate provides hardness and wear resistance
Stub-length construction maximizes rigidity and minimizes deflection
Right-hand flute direction and right-hand cutting for standard CNC milling setups

Compatibility

Designed for use with standard straight-bore toolholders accepting a 5/8 inch shank diameter. Suitable for CNC milling applications in steel, stainless steel, cast iron, superalloys, and titanium per material codes P, M, K, and S.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the machine spindle fully stopped and locked out per facility lockout/tagout procedures. Seat the shank fully in a compatible toolholder and torque the retention mechanism to the toolholder manufacturer’s specification. Verify runout does not exceed the maximum TIR of 0.0005 inches before beginning a cut. Do not use this tool as a center-cutting end mill, as this series is not rated for plunge entry.

Technical Specifications

Mill Diameter: 5/8 inch (0.6250 inches)
Shank Diameter: 5/8 inch (0.6250 inches)
Length of Cut: 3/4 inch (0.7500 inches)
Overall Length: 3 inches
Corner Radius: 0.0300 inches
Number of Flutes: 9
Helix Angle: 38 degrees
Helix Style: Medium
Pitch: Super Close
End Type: Corner Radius
Length Type: Stub
Flute Type: Spiral
Flute Direction: Right Hand
Cutting Direction: Right Hand
Single or Double End: Single
Material: Solid Carbide (Micrograin)
Material Grade: Micrograin
Coating: AlTiN (PVD)
Centercutting: No
Coolant Through: No
Chipbreaker: No
Shank Type: Straight-Cylindrical
Material Removal Type: Roughing and Finishing
Primary Workpiece Materials: Steel, Stainless Steel, Cast Iron, Superalloys, Titanium
TIR Maximum: 0.0005 inches
Corner Radius Tolerance: +0.00100 to -0.00100 inches
Mill Diameter Tolerance: -0.0020 / 0.0000 inches
Shank Diameter Tolerance: -0.0001 / -0.0004 inches
Overall Length Tolerance: -0.0600 / +0.0600 inches
Series: S938R
Package Dimensions: 5 inches x 0.97 inches x 0.97 inches
Weight: 0.44 pounds
UNSPSC Code: 27112803