Irwin Industrial Tool Co 9444 Hex Threading Die 1/2x13 Nc

Product Description

The IRWIN INDUSTRIAL TOOL CO 9444 is a 1/2 inch x 13 National Coarse (NC) fractional hex die used to cut or restore external threads on bolts, rods, and fasteners. The die measures 1 inch across its hexagon body and is machined from carbon steel, giving it the hardness needed for hand threading through a range of common materials. This tool is suited for maintenance and repair applications where rethreading is required and high-precision tolerance is not the primary concern. Licensed tradespeople, maintenance technicians, and skilled DIYers handling general fastener work will find this die a dependable bench or field tool.

This die is intended for routine maintenance and repair work, including rethreading damaged or corroded bolt threads in plumbing, HVAC, and mechanical assemblies. The hex body is designed for use with a standard hex die stock, which provides the leverage needed for consistent thread cutting. When working in tight or confined spaces, the hex profile also allows the die to be driven with a wrench or socket, making it practical for in-place rethreading jobs without full clearance around the workpiece.

Key Features

• 1/2 inch x 13 National Coarse thread specification for standard fastener sizing
• 1 inch hex body profile compatible with standard hex die stock holders
• Carbon steel construction provides hardness for hand threading across a variety of materials
• Can be turned with a wrench or socket when die stock clearance is not available
• Suited for rethreading and repair work where tolerance-critical threading is not required

Compatibility

Designed for use with standard hexagon die stock holders. The 1 inch hex body profile fits hex die stocks commonly used with fractional NC threading dies of this size. Compatible for hand threading work across a variety of workpiece materials.

Installation Notes

This die is a hand threading tool intended for use by maintenance technicians, plumbers, HVAC service techs, and skilled tradespeople. Secure the workpiece before threading and apply appropriate cutting oil to extend die life and improve thread quality. Always confirm the die is seated squarely on the rod or bolt before applying rotational force to avoid cross-threading or die damage. Power down or de-energize any system before rethreading fasteners on installed equipment.