Seco 17003608 Square End Mill 7/16 in 5 Flute Altin S545

Product Description

The SECO 17003608 is a single-end, square-profile end mill designed for demanding metal-removal operations in machining centers and CNC mills. Built from micrograin solid carbide and finished with an AlTiN coating, this tool handles steel, stainless steel, cast iron, high-temperature alloys, aluminum and non-ferrous metals, and hardened materials. The 5-flute geometry with a 45-degree spiral helix angle promotes aggressive chip evacuation and smooth surface finishes. At 0.4375 inches (7/16 in) in diameter with a 2-inch length of cut, it is well suited to full-depth slotting, profiling, and shoulder milling in production environments where tool life and dimensional accuracy are critical.

The 17003608 belongs to SECO Series S545 and targets production machining applications across a wide range of workpiece materials. Its right-hand cut, right-hand flute spiral configuration is the standard orientation for most CNC vertical and horizontal machining setups. The 0.4375-inch straight shank fits standard collet chucks and end mill holders sized for 7/16-inch tooling. It is a regular-length tool at 4 inches overall, making it a practical choice for the majority of pocket, slot, and contour operations that do not require extended reach.

Key Features

• Micrograin solid carbide substrate for high wear resistance and rigidity
• AlTiN coating for elevated heat resistance in ferrous and hardened material machining
• 5-flute design increases feed rates and surface finish quality versus 4-flute equivalents
• 45-degree helix angle promotes smooth cutting action and efficient chip flow
• Center-cutting geometry allows direct plunge entry without a pre-drilled hole
• Right-hand cut, right-hand spiral flute — standard orientation for CNC milling setups
• Tight tolerances: diameter -0.0000/-0.0020 in, shank -0.0001/-0.0004 in, TIR max 0.0005 in

Compatibility

Designed for use in CNC machining centers and manual mills accepting a 7/16-inch straight shank; compatible with ER collet chucks, shrink-fit holders, and end mill holders sized for 0.4375-inch shank tooling. Rated for steel (P), stainless steel (M), cast iron (K), high-temp alloys (S), aluminum and non-ferrous metals (N), and hardened materials (H) per ISO material group designations.

Installation Notes

Tool setup should be performed by a qualified machinist or CNC operator with the spindle powered off and the machine in an e-stop or lockout/tagout state. Seat the straight shank fully into the holder and torque the collet nut or set screw to the holder manufacturer's specification. Verify runout against the 0.0005-inch maximum TIR before beginning a production run. Inspect cutting edges for chipping after use on hardened or abrasive workpiece materials, as edge condition directly affects dimensional accuracy.