Sgs 39145 Square End Mill 23/64 in 4 Flute Solid Carbide

Product Description

The SGS 39145 is a solid carbide square end mill designed for precision material removal in milling operations. It carries a 23/64-inch (0.3594-inch) cutting diameter, a 1-inch length of cut, and a 3/8-inch straight-cylindrical shank, with an overall length of 2.5 inches. The four-flute, right-hand spiral configuration with a 30-degree helix angle promotes efficient chip evacuation and stable cutting under load. A TiN (titanium nitride) finish is applied to the cutting edges, increasing surface hardness and extending tool life. This end mill is intended for use by machinists and tool-and-die professionals in CNC and manual milling applications.

The SGS 39145 is suited for a broad range of workpiece materials, including cast iron, non-ferrous metals, stainless steel, high-temperature alloys, and steel (ISO material codes H, K, M, N, P, and S). The variable index geometry reduces harmonic vibration during cuts, making it appropriate for both roughing and finishing passes in regular-length milling applications. It is centercutting, allowing plunge entry directly into workpiece material without pre-drilling.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• TiN coating increases edge hardness and reduces heat buildup at the cutting surface
• Four-flute, right-hand spiral with 30-degree helix angle for effective chip evacuation
• Variable index design reduces chatter and vibration during milling
• Centercutting capability allows direct plunge milling without pilot hole
• Mill diameter tolerance of +0.000 / -0.002 inches for consistent fit and dimensional accuracy

Compatibility

Designed for use in standard 3/8-inch collet or end mill holders on CNC machining centers and manual knee mills. Compatible with workpiece materials across ISO material codes H, K, M, N, P, and S as specified by the manufacturer.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's guidelines for tool holding and runout tolerance. Ensure the machine spindle is fully stopped and the control is in a safe state before changing or seating the end mill. Use a calibrated torque wrench when tightening collet nuts to avoid shank damage. Verify tool projection and runout with a dial indicator before beginning a cut.