Sgs 31873 Square End Mill 5/16 in 4 Flute Solid Carbide Ticn

Product Description

The SGS 31873 is a solid carbide square end mill designed for precision milling in demanding metalworking applications. Built to Series 1EL extra-long standards, it features a 0.3125 inch cutting diameter, a 1.625 inch length of cut, and a 4 inch overall length on a 0.3125 inch straight-cylindrical shank. The four-flute geometry with a 30-degree helix angle and variable index promotes smooth chip evacuation and reduces chatter during slotting, profiling, and peripheral milling. A titanium carbonitride (TiCN) coating over a micrograin carbide substrate improves surface hardness and wear resistance, extending tool life across a broad range of workpiece materials.

This end mill is suited for CNC machining centers and manual mills handling ferrous and non-ferrous metals, high-temperature alloys, and cast materials. The extra-long length of cut makes it appropriate for deep-pocket milling, side milling in tight clearance zones, and applications where a standard-length tool cannot reach. Right-hand cut with right-hand spiral flutes matches the conventional spindle rotation of most vertical machining centers. The centercutting design allows plunge entry without a pre-drilled start hole.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention in hard materials
• TiCN coating increases surface hardness and reduces built-up edge on sticky alloys
• 30-degree helix angle with variable index reduces harmonics and improves surface finish
• Four-flute, spiral, centercutting geometry supports slotting and plunge milling
• Extra-long Series 1EL length of cut (1.625 inches) for deep-pocket and extended-reach work
• Straight-cylindrical shank with tight tolerance fits standard ER and end-mill holders

Compatibility

Designed as an OEM-style cutting tool for use in CNC machining centers and manual milling machines accepting a 0.3125 inch (5/16 inch) straight-cylindrical shank. Suitable for workpiece material codes H, K, M, N, P, and S as designated by the supplier, covering cast iron, non-ferrous metals, stainless steels, general steels, and high-temperature alloys.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and the machine is powered down or in a safe tool-change state before loading or unloading the end mill. Seat the shank fully in the tool holder and torque the collet nut or set screw to the holder manufacturer's specification. Inspect the cutting edges for chips or coating damage before each use, as carbide end mills are brittle and should not be reinstalled after visible edge failure.