Accupro 931-24300 Internal Thread Mill M24x3 4 Flute Carbide

Product Description

The ACCUPRO 931-24300 is a solid carbide helical flute thread mill designed for cutting internal metric coarse threads. It produces M24 x 3.00 threads in a single helical interpolation pass, reducing cycle time compared to traditional tapping. Built from micrograin solid carbide and coated with TiAlN, this tool handles the heat and abrasion demands of production machining environments. With a cutting diameter of 15.75 mm (0.6201 inches) and a length of cut of 35.00 mm (1.3780 inches), it is suited for through and blind-hole threading applications. CNC machinists and tool-and-die professionals are the primary users of this tool.

This thread mill is used in CNC machining centers for producing M24 x 3.00 internal threads in ferrous and non-ferrous materials. It is appropriate for production runs in job shops, aerospace, automotive, and general metalworking environments where thread quality and repeatability are critical. The 4-flute design provides a balance of chip evacuation and cutting stability. The 16.00 mm shank diameter accommodates standard tool holders used with this class of tooling. The minimum nominal thread diameter this tool will produce is 24.00 mm (0.9449 inches).

Key Features

• Micrograin solid carbide substrate for rigidity and wear resistance in demanding cuts
• TiAlN coating extends tool life at elevated cutting temperatures
• 4-flute helical geometry for stable, efficient thread milling in a single pass
• Cutting diameter of 0.6201 inches (15.75 mm) with 1.3780 inches (35.00 mm) length of cut
• M24 x 3.00 metric coarse thread specification with 3.00 mm pitch
• No coolant-through design — suitable for external flood or mist coolant application

Compatibility

Designed for use in CNC machining centers with standard tool holders accepting a 16.00 mm shank, producing M24 x 3.00 metric coarse internal threads to the minimum nominal diameter of 24.00 mm (0.9449 inches).

Installation Notes

This tool is installed by a CNC machinist or tooling technician into a compatible collet chuck or end mill holder rated for the 16.00 mm shank diameter. Confirm tool runout is within acceptable tolerance before threading operations, as excessive runout will degrade thread quality and reduce tool life. Flood or mist coolant is recommended at the cutting zone since this tool does not provide coolant-through capability. Program helical interpolation using the correct thread pitch of 3.00 mm and verify the canned cycle parameters against the machine control documentation before cutting.