Irwin IR9311 Hex Die 4-NS 36 Hcs

Product Description

The IRWIN IR9311 is a hexagonal threading die designed for cutting external threads on fasteners and rod stock. Made from 36 HCS (high carbon steel), this die delivers the hardness needed for clean, accurate thread cutting on mild steel, brass, aluminum, and similar materials. The 4-NS (4 National Standard) thread designation indicates the thread standard this die is sized and configured to cut. It is sold individually and is a standard carded product intended for use in professional threading operations by machinists, pipefitters, and general tradespeople working with threaded fasteners and fittings.

This hex die is suited for bench-mounted or hand-held die stock applications where external thread cutting is required. The hexagonal outer profile allows it to be driven with a standard hex die stock or wrench, making it practical for both shop and field use. It is appropriate for low-volume threading tasks, rework of damaged threads, and custom thread fabrication on rod and bolt stock in trade and light industrial settings.

Key Features

• 4-NS thread designation for National Standard external threading
• Hexagonal body profile compatible with standard hex die stocks
• 36 HCS (high carbon steel) construction for hardness and thread-cutting performance
• Sold individually — minimum order quantity of 1
• Carded retail packaging for easy storage and identification

Compatibility

Designed as an OEM-style replacement or standard hex threading die for use with die stocks and wrenches that accept hex-profile dies of the corresponding size.

Installation Notes

Threading dies should be installed and used by qualified tradespeople familiar with thread-cutting procedures and tooling. Ensure the workpiece is securely clamped before beginning the threading operation. Apply cutting fluid or thread-cutting oil to the die and workpiece to reduce heat and extend die life. Never force a die past its cutting capacity, as this can damage the die or the workpiece thread form.

Technical Specifications

• Thread Standard: 4-NS (National Standard)
• Die Shape: Hexagonal
• Material: 36 HCS (High Carbon Steel)
• Unit of Measure: Each
• UPC: 042526093111

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: IR9311