Accupro ACC-IDRT61 Threading Tool Bit 3/8 in Shank Rh Carbide

Product Description

The ACCUPRO ACC-IDRT61 is a single point threading tool bit designed for internal threading operations on lathes and turning centers. Built to IDRT-61 industry standard, it features a micrograin solid carbide tip brazed to a rigid steel shank, delivering consistent thread form and extended tool life in production and job-shop environments. The 60-degree included angle suits unified and metric thread profiles. With a 3/8 inch shank height and 3/8 inch shank width, this bit mounts directly into standard square-shank tool holders. Machinists and tool-and-die professionals use this bit for right-hand internal threading passes where dimensional accuracy and surface finish are critical.

This tool bit is suited for internal right-hand threading on small-bore workpieces across a range of materials including steel, aluminum, and cast iron. The 2.5 inch overall length and 1 inch tip length provide adequate reach into bores with a minimum thread diameter of 0.45 inches. It fits standard IDRT-style boring bar holders and is appropriate for use on manual lathes and CNC turning centers in both production and maintenance machining environments.

Key Features

• Micrograin solid carbide tip for improved wear resistance and sharper cutting edge retention
• 60-degree included angle compatible with unified and metric thread forms
• Right-hand cutting direction for standard internal threading passes
• 3/8 inch square shank fits common IDRT-style tool holders without modification
• Minimum thread diameter of 0.45 inches suits small-bore internal threading applications
• Meets IDRT-61 industry standard geometry for consistent thread profile accuracy

Compatibility

Designed as an OEM-style replacement and standard fitment for IDRT-style single point threading tool holders accepting a 3/8 inch square shank.

Installation Notes

Installation is performed by machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the tool holder is securely clamped before inserting or adjusting the bit. Set tool height on center with the workpiece centerline before threading passes. Inspect the carbide tip for chipping or wear before each use, as a damaged tip will produce out-of-tolerance thread forms.