Sgs 37159 Square End Mill 7/16 in 5 Flute Solid Carbide Z5S

Product Description

The SGS 37159 is a solid carbide square end mill designed for precision milling operations in metal and hard-material applications. Built to Z5S series specifications, it features a 0.4375 inch (7/16 inch) cutting diameter and a 37-degree helix angle with a variable index flute geometry that reduces harmonics and chatter during aggressive cuts. Five spiral flutes and a micrograin carbide substrate provide a strong combination of edge retention and surface finish quality. A titanium nitride (TiN) coating adds surface hardness and lubricity, extending tool life in ferrous and non-ferrous materials. This tool is center-cutting and runs right-hand cut with right-hand flute direction, suited for plunge and peripheral milling.

The SGS 37159 is intended for use in CNC machining centers and manual mills where a short, rigid end mill is required. The regular-length, straight-cylindrical shank with h6 tolerance makes it compatible with standard collet chucks and end mill holders. With a 0.625 inch length of cut and 2.5 inch overall length, it is well suited for shallow-to-moderate depth pocketing, slotting, and profiling in a production shop environment. Machinists and CNC operators in tool and die, aerospace, and general metalworking applications are the primary users.

Key Features

• 0.4375 inch (7/16 inch) cutting diameter with matching 0.4375 inch straight-cylindrical shank
• 5 spiral flutes with variable index geometry to reduce vibration and improve surface finish
• 37-degree helix angle optimized for chip evacuation and cutting efficiency
• Micrograin solid carbide construction for edge strength and wear resistance
• Titanium nitride (TiN) coating for extended tool life and reduced friction
• Center-cutting design allows direct plunge entry

Compatibility

Designed as a Z5S series replacement or direct-use solid carbide square end mill for standard 7/16 inch collet chucks, shrink-fit holders, and end mill holders with h6 shank tolerance.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank to the recommended gauge-line depth in the holder and torque the collet nut or set screw per the tool holder manufacturer specification. Verify runout with a dial indicator before beginning a production cut, as excessive runout accelerates carbide edge chipping.