Irwin IR6634 Hex Die 8mm X 1.25mm 1 Inch Hcs

Product Description

The IRWIN IR6634 is a hex die designed for cutting external threads on fasteners, bolts, and round stock. This die cuts an 8mm x 1.25mm thread profile and measures 1 inch across the hex body for use with a standard die stock or wrench. Constructed from high carbon steel (HCS), the IR6634 delivers the hardness needed to thread mild steel, aluminum, and similar materials found in automotive and machinery applications. It is sized for external die use, meaning it mounts in an external-style die holder rather than a round split die stock.

This hex die is suited for automotive repair and general machinery work where new external threads need to be cut or damaged threads need to be re-chased. Typical applications include cutting threads on tie rod ends, exhaust hardware, hydraulic fittings, and machine frame fasteners. It is commonly used by automotive technicians, millwrights, and maintenance mechanics in shop and field settings. The 8mm x 1.25mm pitch is a standard metric coarse thread size widely encountered in metric fastener applications.

Key Features

• Cuts 8mm x 1.25mm external metric coarse threads
• 1 inch hex body fits standard external die stocks and hex die wrenches
• High carbon steel (HCS) construction for hardness and cutting edge retention
• Suited for automotive repair and machinery maintenance applications
• Sold individually (each unit)

Compatibility

Designed for use with external hex die holders accepting a 1 inch hex die. Fits standard metric 8mm x 1.25mm thread applications in automotive and general machinery settings.

Installation Notes

Hex dies are installed by mechanics and machinists using an appropriate external die stock or hex die wrench. Ensure the workpiece is secured before threading and apply cutting oil to the die and stock to reduce heat and extend tool life. Inspect the die for wear or chipping before each use. Follow applicable shop safety practices when operating threading tools under power or by hand.

Technical Specifications

• Thread Size: 8mm x 1.25mm
• Die Body Size: 1 inch hex
• Thread Type: External metric coarse
• Material: High Carbon Steel (HCS)
• Unit of Measure: Each
• Minimum Order Quantity: 5
• UPC: 042526066344

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: IR6634