Eagle Cutting Tool CHD-4375-20-I Carbon Hex Rethread Die

Product Description

The EAGLE CUTTING TOOL CHD-4375-20-I is a carbon steel hex rethread die sized for 7/16-20 NF (National Fine) threads. Rethread dies are used to restore damaged, corroded, or distorted external threads on bolts, studs, and threaded rod without full replacement. The hex outer profile allows a standard wrench or die stock to drive the tool with controlled torque. At 1.96 pounds, this is a solid, single-size die suited for shop use or field repair work where a damaged fastener thread needs to be brought back to spec quickly and accurately.

This die is intended for use on 7/16-20 NF external threads commonly found in mechanical assemblies, HVAC equipment mounting hardware, plumbing fixture studs, and general industrial fastener repair. It is appropriate for both shop bench work and on-site service calls where a tap and die set may not be available and a dedicated rethread tool is needed. Trade professionals including HVAC technicians, pipefitters, and maintenance mechanics will find this a practical addition to a thread-repair kit.

Key Features

• Sized for 7/16-20 NF external threads for precise thread restoration
• Carbon steel construction provides adequate hardness for rethread operations on standard fastener materials
• Hex outer profile accepts standard wrenches or die stocks for controlled driving
• Single-size dedicated die ensures consistent thread form without adjustment
• Compact and field-portable at 1.96 pounds

Compatibility

Designed for use on 7/16-20 NF external threaded fasteners including bolts, studs, and threaded rod requiring thread restoration or cleanup.

Installation Notes

Rethread dies should be used by qualified trade professionals familiar with thread repair procedures. Before starting, clean debris and loose material from the damaged thread area and apply cutting oil to reduce friction and extend die life. Drive the die slowly and back off periodically to clear chips, especially in blind or confined areas. Do not force the die past resistance, as this can further damage the thread or crack a worn die.

Technical Specifications

• Thread Size: 7/16-20 NF
• Thread Standard: National Fine (NF)
• Profile: Hex
• Material: Carbon Steel
• Weight: 1.96 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: CHD-4375-20-I