Accupro 937-12527 Thread Mill 1/16 1/8 Nptf 3 Flute Carbide

Product Description

The ACCUPRO 937-12527 is a helical flute thread mill designed for internal NPTF thread milling in 1/16 and 1/8 thread sizes. Built from micrograin solid carbide and coated with TiAlN, it delivers consistent thread geometry and extended tool life in demanding machining environments. The 3-flute design balances chip evacuation with cutting stability. With a 0.245-inch cutting diameter and a 0.437-inch length of cut, this tool suits small-diameter internal threading operations on CNC machining centers. Installation is performed by machinists and CNC programmers working in metalworking, toolroom, and production environments.

This thread mill is suited for generating NPTF internal threads in sizes 1/16 and 1/8 on CNC equipment. The 1/4-inch shank diameter fits standard toolholders commonly found on vertical and horizontal machining centers. At 27 teeth per inch, the tool is optimized for fine-pitch NPTF thread profiles used in pressure-tight pipe fittings and fluid system components. It is a practical choice for aerospace, automotive, hydraulic, and general metalworking applications requiring reliable pipe thread milling without a tap.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance in hard materials
• TiAlN coating improves heat resistance and extends tool life at higher cutting speeds
• 3 helical flutes promote efficient chip flow during internal thread milling
• NPTF thread standard ensures compatibility with pressure-tight pipe thread applications
• 0.245-inch cutting diameter and 0.437-inch length of cut suited for small-bore threading
• No coolant-through design keeps toolholder setup straightforward

Compatibility

Designed for internal NPTF thread milling in 1/16 and 1/8 thread sizes using a 1/4-inch shank toolholder on CNC machining centers capable of helical interpolation.

Installation Notes

Thread milling with helical interpolation requires a CNC machining center with 3-axis simultaneous movement capability. Ensure the toolholder is properly torqued and the shank is fully seated before cutting. Verify spindle speed, feed rate, and helical pitch in the CAM program before running the first pass. Do not use this tool on manual machines or without a properly programmed helical interpolation routine.