Carmex S0250C941.25ISO Thread Mill M8 X 1.25 Solid Carbide

Product Description

The CARMEX S0250C941.25ISO is a solid carbide helical flute thread mill designed for cutting internal Metric Coarse threads. Built to the M8 x 1.25 thread standard, it features a 0.25-inch shank diameter, a 0.234-inch cutting diameter, and a 0.94-inch length of cut. The three-flute geometry supports both left-hand and right-hand flute direction, making it adaptable across CNC milling operations. A TiAlN coating extends tool life in demanding materials. This tool falls under the Mini thread mill type and is intended for machinists and tooling professionals working in production or job-shop environments where precise internal thread milling is required.

This thread mill is suited for internal thread milling applications on machining centers where M8, M10, and M12 metric coarse threads are required. It is typically used in ferrous and non-ferrous materials where a thread mill approach is preferred over tapping, particularly in blind holes or applications requiring precise thread geometry. The solid carbide construction and TiAlN coating make it a practical choice for medium to high-volume production work. Coolant-through capability is not supported on this tool, so external coolant or mist lubrication should be planned accordingly.

Key Features

• Solid carbide construction with TiAlN coating for extended tool life in hard and abrasive materials
• Three-flute helical design supports efficient chip evacuation during internal thread milling
• Compatible with both left-hand and right-hand flute direction for flexible CNC programming
• Mini thread mill type with 0.234-inch cutting diameter suitable for compact bore geometries
• M8 x 1.25 Metric Coarse thread standard with 1.25 mm pitch
• No coolant-through - designed for use with external or flood coolant delivery

Compatibility

Designed for internal Metric Coarse thread milling at nominal diameters of M8, M10, and M12, as specified by the manufacturer for this tool configuration.

Installation Notes

This tool is installed and operated by machinists using CNC milling equipment - confirm spindle collet or toolholder compatibility with the 0.25-inch shank diameter before mounting. Program helical interpolation parameters to match the 1.25 mm pitch and verify depth-of-cut does not exceed the 0.94-inch length of cut. Power down and lock out the machine spindle before tool changes. Do not exceed manufacturer-recommended feed and speed parameters for the material grade MT7 and TiAlN coating combination.